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Great guide Dogie..
I really like your comprehensive check list you made that depict which feature the miner has or not. I really hope you keep using that in all your review/guides from now on.

Anyhow, my biggest worry about getting an S7 is the noise. I'm surprised that beast only does 61dB at max fan. Is that actual reading with a sound meter or a reading taking from the manufacturer's fan taken in a sound proof room?

The S5 is noisier and with double the TDP for the same formfactor-ish i can't imagine the S7 being any quieter.

It will be.


Actual reading with an expensive meter, in an otherwise 25dba background.


The S5 just spams air all over the place and hopes a portion of it goes through the heatsinks. The S7 also has better heatsinks than the original S7s and is fully enclosed. If noise is an issue it has variable fan control if you can keep ambient temperatures down.

At 30% fan (2500rpm) the measurement only goes down to 59dba at 1m but it drops off much faster. Only an Avalon4 is quieter than it out of recent miners.

Your photos are made from  the older version of S7.

The new S7 is with different controller (all data cable connectors is in one way) .
Also, the housing is different from from the top. The older housing is from top smooth, like an your pictures.


https://i.imgur.com/xlhWJ9s.jpg?2 (https://i.imgur.com/xlhWJ9s.jpg?2)
Click to enlarge

https://i.imgur.com/nVZjhe0.jpg?1 (https://i.imgur.com/nVZjhe0.jpg?1)
Click to enlarge

"New" S5+ and "New" S7

Great guide as always.  Love your  high rez pictures.  

What camera do you use to take those?  I always am amazed by your photo work.

Nikon D3200 with a 40mm prime + some macros when needed. Its getting a bit dated now, some of the new cameras are much better.

whats the big difference? is the new controller better?

The only indication I can find is that the cases have larger interlocking extrusions on the new one but the older boards seem stabler at higher clock speeds.

So there are different versions of S7s among batch 1?  That's kind of annoying.

Probably just mine was a batch 0, I got it 2-3 weeks before batch 1.

arent additional PCIE needed since that PSU comes with only 8?

8 should be fine on any reasonable PSU, I run with 7 with 16AWG and cables are good. There simply isn't a cost efficient PSU with 10+ so if you want more you'll have to pick up some 2x molex to PCI-E adapters (http://goo.gl/69KKeU).

For someone so adamant about giving others legal advice, I would say it's unwise to recommend anyone configure their $1800+ miners in a way that may void warranty with the manufacturer. Not that I disagree with you in the least on the matter...

How exactly could they ever know if you're running each board with 2 PCI-e instead of 3 PCI-e? 200Watts per socket is well into the safety margin, unless you're using cheap ass pci-e connectors, they will most likely work without even heating up.

Like I said, I agree with what's being stated 100%. With high quality cables (little larger than 16awg), I run 10x Neptune cubes each with single PCIe cables up to 280W, and they're hardly warmer than ambient.  

Do I know how they would find out I was running 2 instead of 3 PCIe cables on an S7? Maybe not.

Is it wise to advise others to go against something they have made explicitly clear against doing (for whatever reason)? No.

Will I do it myself? Of course not ;)

The splitters that dogie linked to are the right way to go, for how much they cost they give you peace of mind in regards to warranty.

Edit: Here's a flashback

The reason they provided was that it "was string design and so needed 3", it didn't make sense. You are doing nothing wrong by using your unit correctly, where as overclocking is the specific activity of pushing a unit beyond its specifications. It seems like you have an ulterior motive here.

How about just adding a couple of these splitters to the single PCI-e cables that come with the suggested EVGA power supply.  Problem solved and they are less than $4.

http://www.amazon.com/JacobsParts-Express-Power-Splitter-Cable/dp/B00JLU0UQ4/ref=sr_1_3?ie=UTF8&qid=1443718016&sr=8-3&keywords=pcie+splitter

Let's look at the number of connectors from a technical point of view. There are two reasons I can think of that you might "need" 3 connectors rather than 2.

First is the current rating of the contacts in the connector. In this case using a splitter will protect the Miner connectors however it will not protect the connector that is plugged into the splitter. So good from the Miner Warranty point of view but of no value from an overall reliability point of view.

Second is the volt drop through the cables and connectors, remember here the tight spec that Bitmain has put on the 12V supply of "12.0V+5%, should not be less than 12.0V" in which case the additional connector & wiring for the splitter is going to make things worse rather than better.

My advice would be to use a proper 3 way cable set-up.

Rich

The only thing i can add or contest in all of this is the voltage dropping when using split cables;

I'd add the Caveat that ultimately it depend on the quality of the PSU, and it's probably a good thing to have good connector to prevent arc and corrosion too.

What i mean is i mesured the volt on my evga G2 and its rock solid from 20 load to 105% load, with a single cable or a 6 + 6+2 cable. I believe the lowest i saw was 12.05v and highest i saw was 12.08v.

I still had connectors burn on the EVGA because the shitty Zeus GAQ rebrand's connectors were worthless.

I received 1 s7 but not working properly.
With 600 frei it s not stable and do it 4550 with 0.11-0.14 error.
When I try more 600 hash droped.
550 frei 4400-4500
http://prntscr.com/8nagbn
Any idea ?
I used 2000w server psu

Well Bitmain is now selling the S7- or inferior portion of their S7 as Batch 2. You may be able to ask a partial refund for the difference because your miner does not meet the specs. Again its probably a single blade thats being suck. =/

So i'd say try 575hz since thats what the batch 2 come with at, stock.

Good point on the single blade. Will not fix the problem but would be instructive to boot up with just 2 boards connected at a time and see if there is one Hash board that is throwing the HW errors? Three reboots needed dropping a different board each time.

Rich

I ve manage my PSU.
In full hashing - 12.3 V
600- 4700-4750
It s better from before.

dogie, are you going to test out the S7 firmware updates and let us know the pros and cons?  I'm hearing it is giving a slight improvement and less variation in hash rates but I'm leery of upgrading until I know what they might be taking away...

Maybe although firmware is always a tricky area. People come up with the weirdest "it did x y z blew up my machine error rate up 0.00005%" things which makes it hard to tell anyone anything of value when its drowned out by anecdotes.

Usually firmware is released to fix specific problems...does anyone know what this release addresses?  Do you have any inside scoop on this one?

Great guide! Thanks!

Hi
i upgrade firmware for my antminer s7 and now it is worked for only one minute and than alarmed and not mined all asic status is ok network is ok. i reset my device but this problem is not solved. The Acics Tempurture is under 80 C (60 C).
can you help me
my miner is from batch one can you upload me the original firmware?
thanks

Can you post a screenshot of the status and configuration pages?

thanks
http://i58.tinypic.com/ngvw9t.png
http://i62.tinypic.com/2vmzpy9.jpg

Those two images don't line up, they're showing different pools to each other. Also, what PSU are you using?

I changed the pool in next image
I buy the psu from bitmaintech
https://bitmaintech.com/productDetail.htm?pid=000201505040743496917U7kGsCm0694

Try 575mhz on the advanced settings page and go back to Antpool.

I try with 575 , 550 but hw erore is very high and my hashrate is under 4000th/s

That reminds me, what PSU did you use Dogie? I'm looking at either getting one like yours or doubling up on a Corsair 850 modular psu (it weighs as much as a barge, I love it.).

Can a single 110V 15A outlet handle this? 


Thanks for your help!

-DM

Mine is on a DPS-2000 but that's more to do with the PSU already being on the right shelf than anything. 2x Corsair CX750Ms is the cheapest but requires 2 additional 2xmolex to PCI-E adapters. There isn't really a sensible single consumer PSU option, so 2x of whatever you can get should be okay.


110 * 15 * 0.8 = sort of but not really. I don't think officially you should be doing that 24/7 but its your decision.

You could get a EVGA 1600 G2, but its pricey.

i bought the EVGA 1600 G2 to try out. still waiting on a 6 pin splitter to be shipped in though. it has 9 PCIe slots. so close!

The EVGA 1600 G2 comes with at least 14 PCI-e connectors. My 1300 G2 came with many and also had some 1x6+1x6+2 pins cables too. So you should have plenty of connectors.

Did you get it used? Or did you not count both 6+2 and 6 pin cables?

From stock;
PCIE: 9 x 8pin (6+2), 5 x 6pin = Total would be 14 connectors.

Oh, so you can use the outputs labeled for CPU? I haven't plugged it in yet, it is new, just figured i should stick to VGA power points.

Well from what I've read plugging in a pcie 6+2 connector into the cpu slot (on the psu) will fry whatever your connecting.

You would have to verify the pinout. If you change the wiring so that +12v go to +12v and ground to ground, there should not be any problem, assuming the cpu socket is on the main rail. Seem risk prone.

I think the best way to save a socket would probably use perif to molex, then use a 2x molex to PCI-e adapter to power the controller.

I would not do this to power a blade.

So the pci connection on top of the S7 is purely for powering the control board? I'm thinking of running each S7 off an EVGA 1600, but I need another port on the PSU for the controller.

Yes it is.

Look into purchasing a molex to PCI-e adapter (http://www.amazon.com/gp/product/B0007RXDDM/ref=pd_lpo_sbs_dp_ss_2?pf_rd_p=1944687622&pf_rd_s=lpo-top-stripe-1&pf_rd_t=201&pf_rd_i=B007NMSUUA&pf_rd_m=ATVPDKIKX0DER&pf_rd_r=084JT0E6BSB9472ASKBR) to get that extra PCI-e connector for powering the controller. I'm using a couple of those adapters with an EVGA 1300W G2 and everything has been working just fine. Small piece of advice, if you've purchased a new GPU recently they often come with one or two of these adapters, so you could use that instead of purchasing another for $4.

The EVGA 1600 should have enough cable on its own for 10 ports. With the 6+2 and 6 pci-e connector it comes with combined, this should not me a problem. If you mean because there are only 9 * 8 pins socket, there are two other things you can do;

Use a cable with 2 6 Pins, or use a 6 to 6 pin cable and use the perif socket to power the controller.

Lastly, the EVGA 1600 is probably a good pick if you want to OC it. But i guess 2x 750-850 G2/GS would be cheaper if you fancy running multiple PSU per miner.

Hey dogie, I have a dumb question for you.  You recommend the 1300w psu, but you need 10 6 pin connectors right ?  Its 3 per board, and all 3 must be on the same psu.  the 1300 w comes with : 6 x 6+2pin PCI-E and 2 x 6-pin PCI-E.  So how to you rig it ?

With a decent PSU like this you're fine doing 2x PCI-E to each hashing board, = 7 minimum. If you want 3 PCI-E per board you can get some 2x molex to PCI-E adapters off ebay for a few bucks. Other non industrial solutions with 10+ native PCI-E will cost you far more than this.

my batch one s7 (shipped one day before delay comepensation ???)

ramdom beeps long and or short short ???

offline just like that! at random times ???

Is this normal I have 600 stickers and updated to 600 firmware.

The beeps is somthing I can live with, does not happen that often.

But if it goes offline at random times and there is no fix, I will apply for RMA.

Beeping is a sign of losing internet or pool connection. What pool are you on and what backup pools?

Thanks dogie for the explanation !  May I suggest looking at the evga GS series, they come with a lot of 6 pin and 6+2pin connectors, for example getting the 850w gs gold can power 2 / 3 and then take whatever psu you have lying around for the other one.  and keep the waranty :)  Cheers

Thanks Dogie for your comprehensive guide to S7. I always read your guide before making a purchase and never had buyer remorse like early days of mining. Cheers mate.

I am glad to hear it, enjoy.

first two are mininingrigrentals and kano as the third backup.

but why it randomly goes offline?

is this being fixed with firmware?

btw just got a dual-wan router installed 8)
DSL and cable, so i think internet is not the problem

I've been looking into getting one myself lately.  Which one did you get if you don't mind me asking?

draytrack vigor,
used older model
2920vn
today my main cable provider had a maintenaice.
I did not here a single beep ;D

Thank you very much!

https://i.imgur.com/aDQzAJD.png?1
https://i.imgur.com/NPhnufS.png

still offline issues and random beepeing.......

sometimes I come close to machine or walk by it beeps.
maybe coinsidece but could help fix these errors

bitmain does not respond trough zendesk.

I paid full price the get batch 1 miner and not even a resppose and 1 day delevered before compensation.
don't care about thouse thing but I want a fully working machine.
2000$+ is a lot of money for me.

please reply on offline randoms (dogie)

Its far, far more likely to be rentrig.co pool going down than a problem with your miner. I can't even think of a physical fault which would do that, but 100 for your network and mining pool. If you really want to test it, put it on one of the super pools (antpool etc) and see what happens.

oke but the fully random offline's?
also pool issue?

The pool warns me s7 offline, just like that!
the beeps are not really a problem.

Yes, test with something else.

some S5 also have this problem.
they must be powered off and on again to work.

so I think it has nothing to do with the miniing pools and more with the machine itself.
How long would an RMA process take as I am still in the warrenty periode.
I live in the Netherlands

You'll be serviced by Bitmain china then, so potentially measured in weeks.

oke I have chanced PSU's maybe this helps,
but a lot of others seem to have the same problem.
if I had an easy remote power off and on than I could live whit it but I buy a 2000$ +machine and it goes offline whenever he feels like it.

If things keep the way they are I will be reqesting RMA just before me 90 days are up.
When do they begin when machine is deleverd right?

They have previously said from sale date, but it should be from day of receipt. Don't cut it too close.

Dogie i bought the  EVGA SuperNOVA 1300 G2 80+ GOLD, 1300W Fully Modular NVIDIA SLI and Crossfire Ready 10 Year Warranty Power Supply 120-G2-1300-XR    you reccomended and it arrived today...but there are not enough pci ports to even plug into the miner????? Im very confused on what to do now

You have 8 PCI-E, that's 1 for the controller, 3 for a hashing board and 2 for two hashing boards.

Its working, however this damn thing stops hashing every few hours and needs to be restarted

Are you able to connect when it stops mining?

I don't think 1300W is good enough for an antminer, especially when beginners are present.

I'm running 2 different power supplies (RM850 Corsair and Quark 750 Rosewill) and they're doing perfectly. My rig runs at about 1KW (Batch 6) and the PSU doing 2 hashing boards isn't even breaking a sweat (RM850).

I'm also monitoring power to make sure each PSU runs on less than 80% power.


But on to my question: What do you think about the new Batch 6 and Batch 8 miners, with the giant Buck Converter on it? What's the reason for this, and how might it affect efficiency and stability?

1300w EVGA G2 is absolutely fine. Its power is very clean/stable. It even has some leeway for a bit of overclocking and the 10 years warranty on the PSU make this pick a no brainer; If you want the best PSU to do the job, this one is it.

Second picks would be server PSU's since they cost less for the same job.

I have not seen it, sorry.

He's referring to the large inductor and various capacitors you see in the top right corner underneath the 6 pin PCI-e jacks:

https://www.bitmaintech.com/bm_tech_admin_at_123/userfiles/image/45%20chips.jpg

Well as I have said in a couple of other threads.  :) I believe / hope that the inductor & capacitors we can see on Batch 8, and presumably batch 6, Hash Boards are for a Buck Converter chip that is on the other side of the board. So I will say again if anyone gets a chance to take a photo of the other side that would be great.

So assuming it is a Buck Converter, which does make sense because without it the Core Voltage with only 15 Chips in the chain (was 18 on the 162 chip systems) is too high at 0.8V. So what this would then give us would be a hybrid system with a string of 15 Chip Tripples but fed with the voltage from the Buck Converter reduced to around 10 Volts.

Now if all is the above is correct the great thing for Bitmain to have done would be to have made the Buck Converter voltage software adjustable.  :) Even without that there would almost certainly be a way, such as pencil mod, of adjusting the voltage.

Hopefully we will get some Batch 6 in the field soon and may be able to begin answering some questions, and seeing what has happened to the overall efficiency?


Rich

Hi Dogie!

Thanks for the awesome guides! I'm getting my feet wet in the mining world and they've been both informative and helpful!

If I was to buy the S7, I would definitely have a problem with the noise. I've been looking online to see if there are any solutions and it appears as if there are two options: get new fans, or soundproof the room it's in.

The fan alternative seems like a much easier thing to proceed with and I was wondering if you could answer a few questions...

1) What kind of connector does the fan use?
2) Do you recommend a particular fan that could get the sound level to a significantly lower amount?

Thanks,

Will

Thank you! That looks interesting...

1) I don't know what the industry standard name is, but its a 4 pin used for PWM controlled server fans.
2) There isn't really a suitable replacement for S7s which produces a significant improvement, at normal ambient temperatures. You can run them hotter (manual fan speed) though.

Thank you so much! This looks like the kind of thing that I might need to set up. Please could you let me know what fans you use and how you installed them/connected them to the power supply.

Thanks, Will

Awesome! One last question, and thank you ever so much for the help!

Why do you have two power supplies?

Thanks, Will

Awesome, thanks. I'm in the UK so I won't need two and I think I'm going to start mining mid-january whilst keeping my return in bitcoins so that if the price doubles (as you say, it's difficult to predict), I'll will have made the initial investment back.

``Rated Current   108A``

Why is it 108A and not 10.8A?  I don't understand that at all.  I see that bitmain also doesn't use the decimal:

https://bitmaintech.com/bm_tech_admin_at_123/userfiles/image/Load-Efficiency-temperature.png

And it's true about the subsidy payout halving from 25 to 12.5 BTC per block (though I am not sure of the exact date).  It does this every 4 years by design.  That will be an instant 50% reduction in mining profits from that moment forward.  I am not sure how many of the mining estimate calculator sites take this into consideration as of yet.  One thing they do NOT include, but which is becoming more and more important as time goes on, is...the fees collected from all the transactions.  Those fees don't disappear into the void.  They don't go to the person who invented the system either.  They go, instead, to the miners who solve the block (in addition to the subsidy).  They can't be calculated ahead of time, because they depend entirely on how much in fees was collected in that block.


You can infer from the slope changes in this curve that the payout halves.  As time goes on, a larger and larger portion of the overall payout to miners will be the fees collected rather than the subsidy which keeps halving every 4 years. 

https://i.imgur.com/9eHDs.png

Because its rating at 12V, not 120V. I don't know what mains system you're going to use, but I know you'll be using ~12V.

Okay.  I think I understand now.  On breaker boxes, do the breakers read for 220V or 110V?  I thought residentials get 220V, and it gets split/halved at the box or something.  I should have tried learning more about this stuff a long time ago.  I am assuming that 15A breaker is for 110V?  Is that correct?  It's normal USA wiring, as I understand it.  Built new in 2006.  A quick look at the breaker box shows 10s, 15s, 20s, 30s, and even a 40A.  And it looks like the 30s and 40 take up a double-slot in the breaker box.  So those are maybe 220V?

I have an S7 coming within the next 7 hours FedEx.  So I am trying to learn what I can as quickly as possible.  I could kick the fools who wired this house -- as the two back rooms are both on the same 15A breaker -- which is where the router comes in.  And the master BR is on a 20A for itself.  SMH  

I'm not really worried about the main breaker.  Just the small one headed into the bedroom where the router was installed -- it's rated 15A and shared for both back bedrooms (other than the master BR which has its own 20A for itself).  We're using the 3rd bedroom as an office.  I think I may be running an extension cord from the hallway.  Do you think 16 AWG rated extension cord would be sufficient for a single S7?  

Yes, it's sufficient for your router but only one S7.  It will get pretty warm but not hot with one router and one S7 on that 16 AWG extension cord.  I'm assuming your are using a PSU(s) that can also plug into 120V?

Watch this video about breaker panels:  https://www.youtube.com/watch?v=FMbDPyYAfXw (https://www.youtube.com/watch?v=FMbDPyYAfXw)

Okay.  I think I will be headed out and grabbing a 12 AWG rated extension cord or better.  'pretty warm' disturbs me.  I don't intend to run the router off of it.  It's fine where it is.  I'm just not able to feed power to the S7 from the same bedroom where the router is.  The S1s weren't a problem because they were wireless.  But since the S7 is a direct-line into the router, I sort of need to keep it close to the router with a long extension cord, or a bit further away from the router with a long CAT5 ethernet cable.  I definitely don't want it in the hallway making all that noise.  LOL  At least in the office (3rd BR) I can close the door on it. 

I have an old wireless router from Verizon.  If I can figure out how to turn it into a bridge, I may be able to stick the thing into the garage.  =]

14 AWG extension cord would certainly be fine but 12 AWG even better.  However, 12AWG can be expensive compared to 14 AWG.  14 AWG is certainly much better than the 16 AWG on that 15 amp outlet.

A year ago when I got my third S3 I realized that I would max out my circuit.  So I got a 12 guage extension cord for the new power supply and plugged it into an outlet in a separate room.  (I verified that it was a separate circuit by flipping breakers in the main panel.)  This looked like an acceptable temporary fix, but then I discovered that the outlet where the extension cable was plugged in was getting warm.  A little detective work showed that many other outlets in the same room on the new circuit were also getting warm.  This was a little scary. 

I hired an electrician and had new dedicated point to point circuits run from my main panel to new outlets in my mining room.  This made me sleep better.  While he was installing these new circuits I had him replace the older outlets on the other circuits that had been getting warm.  It turns out that these had been connected by pushing wire ends into the outlets to save time, rather than taking the time to strip wires and wrap the connections.  Over the years, these connections had become corroded, creating resistance and thus heat.

It is not safe to use older electrical wiring lighting purposes and the occasional intermittent load without checking it out thoroughly.  Older wiring may be perfectly legal and perfectly safe for typical use, but doing bitcoin mining is like using a bunch of hair dryers 24/7.

I can get one, maybe two, miners, on one circuit, depending on the load.  What are other "home miners" doing to get 5 or 6 miners in the same room?  I understand "the professionals" are wired to do this, but what are "home miners" doing?

I'm in the US with 120V home wiring.

Wiring up 240V circuits.

D'oh!

Hello help advice  ??? I burned one of three circuit boards with chips ,I can run two boards with chips?

yeah, but will have to take the bad board out and someone suggested to tape the entrance and exit to the empty space, so cooling fan air flow will go only through other two. good luck.

Also if your within 90 day's of purchase make sure to make a ticket for help.   If within warranty chances are send it in and they send one out (assuming warranty is in-tact).

If after 90 day's I would email them and ask for cost.  The S7 is new enough getting another board I would think would make sense as long as it's not high priced.

if not wiring for 240v, you'll have to map your circuits. I happened to have two circuits nearby, so i just use a good extender/surge protector to bring power from the second circuit to the room with a first circuit. This allowed me to run two S7 in the same room. This is probably a limit/room as with more the room will overheat.

One typical residential 15A, 120V circuit can safely run only ONE S7 as 1345-1360W (at peak)/110 (at minimum)=12.3 A. You have to stay at or below 80% of 15A (~12A) for continuous use ( and NOTHING else on the circuit). The fact that on peak it will be 12.3A might be OK since it will be at maximum output and minimal voltage. Typically, voltage is higher than 110V, giving you a slight cushion, but it is close.
A 110/120V 20A circuit is definitely OK-you can check your box re which circuits you have.

Batches 1, 2, 3, 4, 5 and 6 are safer in this regard (they use less power).

And to handle the "wiring", i use big outdoor yellow extension cords. I bring those the a corner in the living room and have all the miner dumb their heat strait outside. I have actual 120V so i do okay up to 1400~1440 per circuit i guess. That should be enough for some OC room for the S7 after the warranty expires.

Great setup info. Can't wait to get my s7

You might be able to get a deal on outdoors extension cords.  I have a very heavy duty one that was meant for a lot of Christmas lights.  I used it when I wanted to have a circuit in one room go to another to mine.  I'm guessing most stores discount lighting and lighting accessories for Christmas lights now.

But make sure it is a very good outdoors one.  Some are not near the quality and cheap. 

Love the design

I may do something very similar with my s7. Where it is going I can get free power and internet, but need to dampen the noise big time.

Question

At the back of the box where you have the white intake vent. Do you think I should add a additional powered fan to help bring cool air in?

Thanks

Won't make much difference but its up to you. Pull is almost as good as push pull for enclosed.

Nice box Fitzy. Just a small tip, maybe you could place the fans on the inside. For looks and sound.  ;)

I get it.
I have my S7 in a tube. Works realy nice. At 50 db now
http://i577.photobucket.com/albums/ss216/Thomas_Kamp/tube_zpsy7cpnzfo.jpg

Seem very nice. Albeit i think that takes a lot of space for one antminer S7. But 50dB is really nice, and if the tube is curved, so the noise can't get out without hitting the inner tube, you get an easy control over the noise control.

True. I could have gone one size smaller. And curfs would be better. But ones i had it in i didn't feel like changing it.

Its all good. I'm building a shelf with sound absorbant panels;
https://i.imgur.com/rwh2DUn.jpg?1

To give you an idea. Thats an early pic when i completed the "proof of concept" stage, it look better now and the panels are actually solidly held now and easily slidable, but still not done.

Next i'm adding sound proof vents so the air gets through but not noise. With the B8 S7 running loud, that is going to help a ton. :)

Hi I got a second hand antminer s7 a couple of weeks ago and I had it set up and running fine for the last fortnight.

Today a guy came to fix the a/c split unit in the same room as the antminer and while he was working on it the antminer started beeping, i checked the temperature and it was fine (53,54 & 59), but the status on the miner pools part of the status page all said DEAD. I refreshed the page and it became blank. Nothing shows up underneath any of the fields.

http://postimg.org/image/dibkp7xep/


http://postimg.org/image/aa73c6b4x/

Kernel Log:
http://pastebin.com/qn9rYvn3


I reset the antminer, powered it off and powered it on, reboot from the miner control and the status page was still blank. I am still able to access the miner by the ethernet network in my house so it is definitely connected to the internet.

Now the antminer beeps for a few minutes every 5 minutes or so.


Does anyone know what is going on?

I am using the standard PSU from bitmain, I have a feeling maybe the cgminer crashed because in the kernel log I can still see some stuff happening. Everything else seems fine. The guy was not working in the same room exactly he was fixing the split unit's compressor which was on the roof above the room, but the a/c is connected to the same room. The a/c & bitminer do not share the same plug although I suspect they are most likely to be on the same circuit which is about 60A.

Had the same problem with an S5+, you can check in the screenshot that it can't display the Hardware Version, only x.x.x.x .
Check mine : http://prntscr.com/9koo21 (http://prntscr.com/9koo21)
In my case it was a malfunction BBB, replaced with a good one ( from an S5) and it solved the problem.  ;D
https://bitmaintech.com/productDetail.htm?pid=00020160105102242316JqapyMif0705 (https://bitmaintech.com/productDetail.htm?pid=00020160105102242316JqapyMif0705)

If you're telling me both the internet and power are good then its the controller. Being able to see all the pools are dead does raise some questions though, and why you are able to partially connect. Status page does go blank when a setting is bad, can you give us a screenshot of the status page?

If its out of warranty then you could try picking up a replacement BBB and see how you go from there, although I'm unsure how successful replacements are for the S7.

Hi Dogie,


Thank you so much for your reply, its great to know that there is someone knowledgeable and altruistic out there :)

With regard to the status page the miner, it only showed as DEAD till i refreshed it then it showed this screen:

http://postimg.org/image/dibkp7xep/

 something really weird was going on in the house, i checked my bitcoin wallet on my laptop and found that several transactions (receipts) had not been received, i then noticed that it there were 0 active connections, the  time the connection was lost to the laptop (which is always on - it was about 10 hours previously the connection was cut) probably coincided with the miner losing connection and messing up, but since i usually have no business going into the room the miner is in for most of the day (its an outhouse in the garden that i wired an ethernet switch to and has a/c split unit)  i wouldnt have noticed the beeping until the a/c repair guy came and i had to go in there and turn off the a/c.

I reset the router twice and then portforwarded 8333 on the router just in case, then i sat dejected and wondering which door to use the s7 as a doorstopper for, when forlornly i decided to check the miner status page one last time and lo and behold, it was back to normal..


Do you think that this is related to the issue that happened to the miner? The miner status page is back to normal now and mining at 4.83th?

Maybe its god taking revenge on me because i won at blackjack yesterday.

Yes, weird behavior can be internet related.

Well i guess this is one we can chalk up to the vagaries of the internet, thank you again i will post back if this problem crops up again just in case anyone else is having the same

Hi all,

A quick question. I have a S7 using Bitmain's APW3-12-1600-B2 as the power supply.

Now, my problem, my miner randomly starts, I repeat, randomly starts. I put my miner all over the house, in different wall plugs, these are some of the things that happen

1) I can mine for 4 hours then the miner dies
2) I can mine for an hour before the miner dies
3) The miner starts up for only 5 mins and then dies
4) I could on the power to the miner, only after 5 mins, lights will appear on the miner, a few mins after that, then the miner starts.

This occurs randomly anywhere I put it. Initially i thought it was my house's wiring. Then i tried to use a multimeter on my PSU. At first, each connector could provide 12V power. The longer I left it on, the least power it provided till at the end only 1V per connector (this also includes the earlier connectors check)

So some im gonna send my psu for warranty.

My question, is there a possibility that the miner could be damaged? or the miner might have problems also which causes it to shutdown?

Its not impossible that the miner could be damaged but my money is also on the PSU. The best thing here would be to try a different PSU on the miner, but i guess you would of tried that already if you have one?

If you have some ATX power supplies, you could try multiple on the S7 to see if it work properly. Personally i just plug all the PSU on the same surge protector, then flip the surge protector on, so that all PSU are powered at the same time as the controller board and it work flawlessly. At least my EVGA all power on at pretty much the same time. I don't know if it would be as clean when using different brands.

A little help. I just got my Antminer S7 today and I am having a few issues getting it up and running.

The red light stays on next to the ethernet cable. I think this means it has a problem.


The problem is, it is not working. It show nothing under the miner status page.

http://i658.photobucket.com/albums/uu308/zerberfert/S7.png (http://s658.photobucket.com/user/zerberfert/media/S7.png.html)

<a href="http://s658.photobucket.com/user/zerberfert/media/S7.png.html" target="_blank"><img src="http://i658.photobucket.com/albums/uu308/zerberfert/S7.png" border="0" alt=" photo S7.png"/></a>

http://i658.photobucket.com/albums/uu308/zerberfert/S7.png

Not sure if the picture will show up or not, so I tried all 3 ways. Hopefully at least one of them will show up.


Please help!

And yes I know I am a noob.

You tried HTML and thats it, the 2 others, you just pasted the same link 3 times. Forum is BBCode, not HTML.

Its;

But it wont work anyways because you need to be a Junior member.

Anyways, what are you doing? What PSU are you using? Did you connect all 10 PCI-e ports? It kind of look like the 3 ASIC boards are not connected to the miner.

I have 2 hp 1000w psu's with X-Adapter REV 2 & 14AWG THHN Cables(the kits you see on amazon, etc). I can't get the red light by the ethernet port to go off. I think that light means it's in some kind of fault mode. There are no stats in the miner status page, not even the fans. It's like they don't exist. I need to figure out what the problem is. Can I just plug in one board at a time to see if they work independently to see if one of the boards is bad?


Oh, it's also very loud and I can not set the fans manually.


Please help.

Yes all 10 power connectors are plugged in. The control board is connected to all 3 hash boards with the ribbon cables. I unplugged everything and I tested both power supplies. I was getting 12.79V on each connector. Anything else I can do?

That does sound like PSU, try and find a replacement to test with.

Give us a screenshot of the configuration page, the one before the status page. Red LED just means its in an idle / fault mode.

Now that you ask this, i now remember an user that would have the miner not start because he had not configured the pools correctly and left the password field blank.

Yeah, status page won't load during a cgminer-y error most of the time.

I have a question about ethernet cables. Can I use any ethernet cable or do I need a solid core CAT6 or something like that? It is going to be a long run from the router to the miner, about 100ft.

Cat5 or Cat6 are good for 100M. Mining data rates are low, either will be fine.


Rich

Thank you Rich. I'm not that technical.

Hello ,
Can you help me please ?

After only 10 day of work ,my S7 batch9 work with only 6 chips on board

http://imgur.com/yoMfL7a

Thank you

What PSU are you using?

 Bitmain's APW3-12-1600-B2 as the power supply

Just noticed you have two threads going.  I asked in other one a few questions: https://bitcointalk.org/index.php?topic=1340522.msg13674566#msg13674566 

I might suggest going to one spot to get answers and stick with it.

Try moving the connector of the bad board to another port on the controller and see if the problem moves on the status page. If it does then contact Bitmain for a warranty replacement of that board, isn't really anything we can do.

Hi everybody and excuse me for bad English
I have a big problem with my ant S7 bach 8
Its working on 2.8-2.9Th and one of theblades is with zero temperature and the red led is not working.
The problem is that When I plug only that blade after several minutes it's working normaly at 1.5Th ,but with other two don't
I'm using IBM 2880w. server power supply with 12.25v. unloaded.
I thing that the problem is in the power supply so I change it with dell 1570w. the result was the same.
Than I plug the dell power supply only to this blade with ibm on the other - nothing changed.
Here is the printscreen and log file .txt  from my miner in Bulgarian forum.

http://bitcoinbg.eu/forum/viewtopic.php?f=7&t=3446 (http://bitcoinbg.eu/forum/viewtopic.php?f=7&t=3446)

In the history there was:
...[136707.332463] Detect device for anyone power err
[136707.337217] send BC data:
[136707.337217] 0x0000: 0x03 0x01 0x00 0x1a 0x89 0x10 0x1f 0x00
[136707.344712] soft ctrl rst time
[136707.348082] reset hash asic
[136707.351102] clear FPGA nonce buffer.....

++++++++++++++++[137313.959584] rev timeout {0x42050080}
[137314.366653] ch0-as33: dev->task_buffer_wr{0x00003a98}rd{0x000040fe}ret work_id{0xc01f} don't match task_buffer_match{0x401f}++++++++++++++++++++++++++
Any advice will be welcome.
Many thanks

Does the problem move if you move which port on the controller board the 'bad' blade plugs into?

Yes, I try it, but there was no difference.The main mistery  is how this malfunctional blade is working  stable alone ::)

hi is there a right and or wrong way to plug in the pic e connecters to the machine from the psu?

please if you can personal message me the answer

No,
but Einstein says That only the human stupidity  and the universe are endless. So with a lot of pressure may be... :-)

So when you moved the connection, did the problem move on the status page or not?

The exact configuration will depend on what PSU are using. What is its model?

AA23920L Astec 2880W Server Power Supply Module IBM
one of the best

So assuming you have a suitable breakout board, and 16AWG wiring on separate PCI-Es then any arrangement will do?

I'm sorry if this has already been discussed, but I want to be clear on this.

I'm new to bitcoin mining and have the following setup:
I live in a small apartment and have an s5 that I'm using with a fan mod (2X Noctua NF-F12's in a push-pull config)and underclocking it @ a frequency of 343.75.
It's running at an ambient temp of 76, and it's been like that for several months. So far it's been working fine with no errors.

I'm looking to upgrade to an s7, but I have some concerns about the temp, the noise, and mainly the power.

From what I've read the s7 requires at least 205V to operate, and many people have added an addition 25A circuit to their breaker box in order to accommodate this.

Since I live in an apartment, adding a 25A circuit is not an option for me, but my dryer outlet is 220V @ 30A. Do you think it's possible for me to use a converter on the outlet to run my s7?

Any CONSTRUCTIVE advice would be appreciated.

Please don't post anything about me winning the lottery and buying a house right now, because that's not within my realm of possibilities ATM.

To be honest I am not completely sure. I'm supposing (assumption is a powerful force) that this is possible for you, but hey, assumption can kill a miner as well. Noise should not be an issue, but the fan rpm is pretty slow and there should be higher rpm quiet fans out there that will cool better, so you'll be able to run without under or overclocking. Ambient temp is a bit high, and if you got a higher rpm fan it should cool down to near 60 and the life of the antminer will be extended. Antminers were never meant to be home miners, so don't expect too much out of them.

Is there any word of the s7 getting an update to cgminer.

Hi I am experiencing an issue whereby two blades on my Antminer S7 are hashing fine while the other reports no issues but shows a low temperature and acts as if it's not hashing giving a hash of 3.2 th or so.

I have double checked and reseated all connections and I don't think it's an issue since it was hashing fine for a month or so.

I changed PSUs and it's still ASIC 3 that is showing the low temperatures. Sometimes 23 C only !!

Sometimes the 3rd board shows all the ooooooooo as if it's normal. Sometimes it's missing some of the oooooooo and sometimes it's showing xxxxxxxoxx

Does this mean the 3rd board is faulty? I've been trying to contact bitmain and e-mailed them and opened a support ticket but have not received a response :(

https://i.imgur.com/0rg1Ol2.jpg

or sometimes missing

https://i.imgur.com/6erjzan.jpg

It is within warranty so I'm concerned why Bitmain has not responded :(

If you mined using that module alone, does the problem continue? If not, what happens if you connect it to a different port on the controller?

Let me give that a try.

The interesting thing is when it first boots up (I set the fans to 50% because of the cold place i put it in and I hate the whine), it goes 100% fan speed (which is normal), then it goes down to 50% and it actually hashes okay for a while at full speed. Then after a few seconds, it will stop, fan goes back to 100% and then it settle down to 50% after a short while and then it only hashes at 3 th.

I've dropped a support ticket to Bitmain almost a week ago but have yet to hear anything from them :(

Yes I disconnected the power to all the other blades and the miner just refused to go and kept on going on a reboot loop where the fans went nuts, it showed a blade with a low temp and then restarted again. Sometimes it shows all the ooooo sometimes it's missing some of the ooooo. When connecting to a different port, no go it would still refuse to hash.

I disconnected the defective blade and left the 2 good one in. It hashes but still did the 100% fan whooshing with mining and then the board rebooted again and restarted and now stably hashing at 3.2 TH. is that normal?

Bitmain has still yet to reply to me (my username is charybdis)

Sounds like a faulty hashing board, nothing we can do but warranty replace it.


Yes that is normal, flashing 100% fan on helps clear dust.

Okay how do I start one given that I haven't received a reply? :(

By waiting, nothing you can do really.

Are there backlogged with requests? They used to be pretty responsive :( What is the average wait time nowadays?

Do I create a repair ticket here? https://www.bitmaintech.com/user/myTickets.htm

I actually don't know what their preferred contact method is, they seem to change a lot.

I am having an issue with 3 of my s7 batch 2. They are running but not mining and I am not sure what do there seems to be no CG Miner after my last reset.


Miner Type Antminer S7
Hostname antMiner
Model GNU/Linux
Hardware Version x.x.x.x
Kernel Version Linux 3.8.13 #22 SMP Tue Dec 2 15:26:11 CST 2014
File System Version Fri Oct 23 17:00:53 CST 2015
Cgminer Version 
Uptime 0
Load Average 0.18, 0.04, 0.01

Can you post a screenshot of your configuration page please? Are you sure that they have internet access and nothing on that side has changed?

I reflashed the image and that seemed to get it straight. It happened on all 3 of my S7's that were hooked up to non bitmain PSU's it was weird.

Interesting theory on Bitmain intentionally making their PIC sucks after warranty period (together with a simple and cheap fix): https://bitcointalk.org/index.php?topic=1420909.20

Hope to hear some clarification on this. Tempted to try this instead of RMA my boards :(

I am trouble getting my S7 to report its chosen ip address. I have followed the instructions in the pdf file, I have tried ipreporter the link they give in the pdf., but it is in Chinese; easy to figure out the tabs but the software keeps reporting "has timed out start again" in Chinese characters.

My S7 batch 16 did ship with one super fan & I did notice 2 of the boards are not secure in the housing slots and wiggle, the first board is secure & all the heatsinks are attached to the chips on each board.

I am using a 1600 watt eVGA PSU.

When I power up the S7 it is idle for a few min & then it goes full fan & seems to be mining on the default antminer pool or whatever they config the S7 with in the mining pool sets. Green lights on controller board , red lights on the front of each ASIC card.

Giant sad face. I guess when you do not allow DHCP on the unit they get more default pool configs so you mine on to the bitmain pool x whoever is trying to configure their miners total hash.

I am happy to learn that everything is ok now.If you see x.x.x.x , it is bb problem related to hardware or software.Try replacing a new version of image afterward replacing the BB.Unfortunately BBs can not be repaired.

Delayed response: Assuming you changed from the default setting of DHCP to a fixed IP, it is possible that you missed some of the additional settings below the fixed IP. These settings must be entered otherwise the device will not be connectible, which may be what happened in your situation.

Hi! I have got a problem.I am using Evga 1600 watt to power my miner.I have experienced something unusual.All the asics seems ok, temps are 0 and miner not hashing.Here is the link.It is neither about BB nor IO (I have swithced off).Checked the cards with eye, no dropping parts).

Here is the link.If anyone experienced such a thing I would very much appreciate if shares the solution or the reason.

http://prntscr.com/b47pmr

temp 0 ?

I believe there should always be a temp displayed, whether it's mining or not.


I have a different problem.

One of the chip seems defective:
https://i.imgur.com/sOVkove.png

it's always the same.
Sometimes it fails after a few minutes sometimes after a day or more.

How can I identify it on the board ?

(which board is chain 1 ?)

it's still under warranty, so I wonder if it's worth the hassle or dismantling it and returning the board to Bitmain ....

It is absolutely not worth the hassle, 100%.

OK I've upgraded my FW to may23rd release, we'll see if it makes a difference (no x after 20mn...)

--------------------------------------------------

still no x after 12h \o/

Oh dear...help me please!  I've spent 3hours trying to get my new S7-LN mining with no luck.
I can ping it ok and run the setup and enter the pool details but no joy!  it just runs for 5 mins then start beeping really loud and I have to then turn it off.

I've tried both bitminter pool and antminer pool

settings for bitminter
stratum+tcp://mint.bitminter.com:3333
username_workername (tried both _ and . )

settings for antminer
stratum+tcp://stratum.antpool.com:3333
username (for the life of me i can't find out how to make a worker name on antminer!  guess it's auto, I've tried _ and . with a made up name for a worker after my username but no joy)


Everytime, whatever I put into the fields, i press save and nothing happens, if I click out of that box to say the miner monitor box and go back, the fields are empty.
Clearly they are not entering.

PLEASE, PLEASE, PLEASE  someone help me!  I have to go out now and won't be back for 7hours! then I'll be up all night!  I'll give you my first 3hours coins if you hit the issue on the head please.

did I mention PLEASE!

Si

You have javascript enabled for the webconfig?

Both fans are plugged in and working?

The fans are both running yes.
Not sure about Java, I'm using google chrome and I'm really not sure about that.  Off to London right now to see a show, so won't be back for a little while to try.  I'll be annoyed and pleased if it is that.  It makes sense though.

I have javascript disabled by default in my browser, manual enables only. When I load the webconfig for an Antminer, the pool config fields always come up blank. I don't know Chrome so I don't know about how it handles scripting, that's just what I've seen causing similar symptoms. Could be something completely different.

You might SSH into the miner and see if the pool config file exists or is corrupted. What do you see on cgminer status on the webconfig?

Can you give us a screenshot of the status and config pages please?

URL;   stratum+tcp://mint.bitminter.com:3333
Worker;  <myusername>_S7
xxx

The monitor shows...


Mem: 51672K used, 199500K free, 0K shrd, 0K buff, 39984K cached
CPU:   0% usr   0% sys   0% nic 100% idle   0% io   0% irq   0% sirq
Load average: 0.18 0.07 0.03 1/65 651
PID  PPID USER     STAT   VSZ %VSZ %CPU COMMAND
650   649 root     R     2148   1%   0% top -b -n 1
407   406 root     S    30652  12%   0% /usr/bin/cgminer --bitmain-dev /dev/bitmain-asic --bitmain-options 115200:32:8:5:200:0782:0725 --bitmain-checkn2diff --bitmain-hwerror --version-file /usr/bin/compile_time --queue 8192 --api-listen --default-config /config/cgminer.conf
360     1 root     S     3324   1%   0% /usr/bin/ntpd -p /var/run/ntp.pid -g
375     1 root     S     2980   1%   0% /usr/sbin/lighttpd -f /etc/lighttpd.conf
368     1 avahi    S     2728   1%   0% avahi-daemon: running [antMiner.local]
369   368 avahi    S     2728   1%   0% avahi-daemon: chroot helper
406     1 root     S     2616   1%   0% {screen} SCREEN -S cgminer -t cgminer -m -d /usr/bin/cgminer --bitmain-dev /dev/bitmain-asic --bitmain-options 115200:32:8:5:200:0782:0725 --bitmain-checkn2diff --bitmain-hwerror --version-file /usr/bin/compile_time --queue 8192 --api-listen --default-config /config/cgminer.conf
357     1 root     S     2272   1%   0% /usr/sbin/dropbear -r /config/dropbear_rsa_host_key -p 22
343     1 root     S     2148   1%   0% udhcpc -b -t 10 -A 10 -x hostname antMiner -i eth0
429     1 root     S     2148   1%   0% {monitorcg} /bin/sh /sbin/monitorcg
430     1 root     S     2148   1%   0% {miner-m.sh} /bin/sh /sbin/miner-m.sh
431     1 root     S     2148   1%   0% {reset.sh} /bin/sh /sbin/reset.sh
649   375 root     S     2148   1%   0% /bin/sh /www/pages/cgi-bin/monitor.cgi
651   649 root     S     2148   1%   0% /bin/sh /www/pages/cgi-bin/monitor.cgi
433   431 root     S     2016   1%   0% sleep 1m
443   430 root     S     2016   1%   0% sleep 1m
517   429 root     S     2016   1%   0% sleep 5m
427     1 root     S     1908   1%   0% /sbin/getty 115200 ttyO0
428     1 root     S     1908   1%   0% /sbin/getty 38400 tty1
410     1 root     S     1812   1%   0% /usr/bin/monitor-recobtn /usr/bin/factory_config_reset.sh
1     0 root     S     1652   1%   0% init [5]
103     1 root     S     1640   1%   0% /usr/bin/monitor-ipsig
416     1 root     S     1632   1%   0% /usr/bin/test-btn /usr/bin/test.sh
21     2 root     SW       0   0%   0% [kworker/u:1]
10     2 root     SW       0   0%   0% [rcu_sched]
15     2 root     SW       0   0%   0% [kworker/0:1]
11     2 root     SW       0   0%   0% [watchdog/0]
2     0 root     SW       0   0%   0% [kthreadd]
3     2 root     SW       0   0%   0% [ksoftirqd/0]
4     2 root     SW       0   0%   0% [kworker/0:0]
5     2 root     SW<      0   0%   0% [kworker/0:0H]
6     2 root     SW       0   0%   0% [kworker/u:0]
7     2 root     SW<      0   0%   0% [kworker/u:0H]
8     2 root     SW       0   0%   0% [migration/0]
9     2 root     SW       0   0%   0% [rcu_bh]
12     2 root     SW<      0   0%   0% [khelper]
13     2 root     SW       0   0%   0% [kdevtmpfs]
14     2 root     SW<      0   0%   0% [netns]
16     2 root     SW       0   0%   0% [bdi-default]
17     2 root     SW<      0   0%   0% [kintegrityd]
18     2 root     SW<      0   0%   0% [kblockd]
19     2 root     SW       0   0%   0% [khubd]
20     2 root     SW       0   0%   0% [irq/86-44e0b000]
24     2 root     SW       0   0%   0% [irq/23-tps65217]
27     2 root     SW       0   0%   0% [irq/46-4819c000]
36     2 root     SW<      0   0%   0% [rpciod]
38     2 root     SW       0   0%   0% [khungtaskd]
39     2 root     SW       0   0%   0% [kswapd0]
40     2 root     SW       0   0%   0% [fsnotify_mark]
41     2 root     SW<      0   0%   0% [nfsiod]
42     2 root     SW<      0   0%   0% [crypto]
45     2 root     SW<      0   0%   0% [pencrypt]
46     2 root     SW<      0   0%   0% [pdecrypt]
53     2 root     SW<      0   0%   0% [OMAP UART0]
54     2 root     SW       0   0%   0% [spi1]
57     2 root     SW       0   0%   0% [spi2]
60     2 root     SW<      0   0%   0% [kpsmoused]
61     2 root     SW       0   0%   0% [irq/150-mmc0]
73     2 root     SW<      0   0%   0% [deferwq]
149     2 root     SWN      0   0%   0% [jffs2_gcd_mtd9]
314     2 root     SW       0   0%   0% [flush-mtd-unmap]
419     2 root     SW<      0   0%   0% [bitmain-asic]

log in bitmain account-->Antpool -->settings -->Add Sub Account,

settings for antminer


Pool 1
URL          stratum+tcp://stratum.antpool.com:3333

Worker      your sub account name_1
Password   any password

3d10h29m15s => still no dead chip !!

Woot, I'm really happy with the new FW !

you could also switch to kano.is, it's a lot easier :)

stratum+tcp://stratum.kano.is:3333
yourBTCaddress_yourworker or yourBTCaddress.yourworker

All is good now, I think it just needed resetting in a particular way.

7d23h55m23s => still rock'n'rolling !

Glad to hear it.

My S7 LN randomly shutdowns , sometime after 1 hours ,sometime after 30 min mining, sometime after 6-7 hours

Temperature seems normal, below 63 Centigrade ,both fan are running fine, runs on stock frequency of 600 , all chips seems normal , no faulty chip sign

 What could be the problem ?

devise is 7 days used only and problem starts after day 2 and frequency of random  shut down increased .

in built Power supply can be problem ? So tripping happens

As I need to restart miner by doing jumper switch on-off many time

Please help :( :( :( :(

When you say it shuts down, exactly what are you noticing that makes you think its shut down? Is the PSU's fan stopped? Are the miner's fans running? Is the PSU hot to the touch? What type of mains circuit is it on?

Thanks for fast reply dogie,

When Shutdown happens,  PSU fan stops and miner's fan also stops simultaneously. PSU is warm but not hot that someone can't touch it.

It is on 230 V circuit ,dedicated line only for miners rated for 16 Amps , total Load is less than  3000Kw, Irony is my other gigabyte PSUs which are 3 year+ old still run smoother.

May I try Low frequency setting (less than factory 600)?  so it can be checked that Enermax PSU of S7 LN is not overloaded

Please reply , Still problem persist.

Have you tried it with an another PSU?

Yeah, very much sounds like a PSU issue. You can try any frequency, graph of how hash rate, power and temperatures vary with chip frequency is in my S9 guide.

PSU is Faulty, Now S7 LN is running contentiously( touch wood  ;)  ) with Seasonic  PSU .
Do Bitmain Provide warranty on PSU supplied with it ,  ?

From Bitmain APW3-12-1600-B2 product page:
https://i.imgur.com/9FXMOze.jpg

That's not the power supply that comes with the S7-LN, it's a Enermax 1000w.  I'm sure it has a warranty, but may not be worth the shipping back to China.

Aargh, sorry, you're right. I read it wrong plus had a brainfart.

Try contacting Enermax and ask them: http://www.enermax.com/home.php?fn=eng/contact_b

You are right not worth to send it back, I have raised ticket on bitmain, hope they help in some way , by the way I am from India,  Enermax may not have facility for RMA in India

Hi guys!

I bought a secondhand S7 with bitmain PSU. Started it up and went to my computer to check the IP number and suddenly i started to spit out the fan blades and i turned it of immediately.
Log in on ebay and bought this: http://www.ebay.com/itm/111969348021?_trksid=p2060353.m2749.l2649&ssPageName=STRK%3AMEBIDX%3AIT
Rmoved the broken fan and noticed that fan blades had hit 2 heatsinks so they are loose now  :(
Any tip what kind of glue or heatsink tape i shoild use?
Thanks

Thermal glue like this http://www.ebay.com/itm/10g-HC-910-Silicone-Thermal-Conductive-Adhesive-Glue-Tube-Heatsink-Plaster-/121718062529?hash=item1c56f63dc1:g:wgkAAOSw9N1Vuw2Y

Thanks mate  :)
Dogie is the man!  ;D

wow, my S7 achieved today a bestshare of 10'091'562'509...

https://i.imgur.com/YPxyDUp.jpg

Not enough for a block, but I'm quite proud of it :)

Current diff is +/- 210'000'000'000

I guess my S7 needed some cleaning  ::)

https://i.imgur.com/yvtDbWc.jpg

new best share: 2'973'279'526.... so close, yet so far away ;p

Help please.. I hope I'm posting in the correct thread.

I have a Antminer S7-F1 4.73th (Upgraded to 2fans), what does it mean if I heard one of the fan or both fan speed (I'm not sure) went up and down, up and down. and it showed a very low hashing speed. and cold temps? but it went back to normal when I rebooted it. Does it mean a problem is on its way? Will it cause fire and burn? Do I have to worry?

Your professional advice is appreciated. thank you.

Fan cycling is part of the restart process and can be triggered with a temporary loss of internet connection. There is no issue and nothing to worry about.

thank you for your reply.

the miner was hashing normally for days, then i got a warning from my miner monitor (awesome miner). that one of my miner is hashing too low. there i noticed the fan is sounding like a servo adjusting voltage on an automatic voltage regulator... sounding like when you accelerate and stop a remote control toy car... No worries? please be sure. :(

Yes. On the reset cycle they make it go up and down in fan rate to clear dust.

Thank you very much for the info.

Please somebody help me!!!

What name of this connectors and where can I buy it?
http://s8.hostingkartinok.com/uploads/images/2016/12/2dfe8ef2498c0894044027bfc0becb6f.jpg (http://hostingkartinok.com/show-image.php?id=2dfe8ef2498c0894044027bfc0becb6f)

They don't have an easily identifiable name but they'll be readily availble on ebay under "9x2 pin pcb socket" or similar. Might have to play around with the keywords to find it.

Has anyone ever tried to use another fans to reduce the noise? I thinking about use some Prolimatech Ultra Sleek Vortex 140mm (http://a.co/4KQ4YcU), I know that its 166 m³/h instead of the 188 m³/h from the default ones, but I'm talking about 18 dBa at full speed!

May I ask... how did you choose the right firmware for your device? how do I know which batch of S7 i own?

batch doesn't matter, only a 1 or 2 fans version matters for the firmware you choose :)

Just started with an S7 with a single fan. TOO LOUD, and there is an annoying whine sound.

I like the enclosure ideas, but wanted to try quieter fans.

Ordered 2 Noctua fans (http://noctua.at/en/nf-f12-industrialppc-3000-pwm) for push-pull config.

I see there is a second 4 pin connector on the control board.

My question is, does anyone know whether I can just plug in the new fans and the firmware will control them properly? Or should I just wire the fans straight into the PSU?

Thanks,

https://enforum.bitmain.com/bbs/topics/3421

Thank you zOU!

Just what I needed. Especially enjoyed the warning not to attach the fan the wrong way so it pushes air into your miner. That would be both tragic and hilarious.

Dogie, can you give me the distances from the edges to the nearest heatsink? Thanks.

Some alternatives, they're all (relatively) quiet and they're all rated @ +130 CFM... works great on S5 and Spondoolies :)
http://www.silverstonetek.com/product.php?pid=711&area=en
http://www.enermax.co.uk/fans/twisterstorm/
http://www.scythe-eu.com/en/products/fans/ultra-kaze-120.html
PS: I haven't tried the SilverStone yet!

Those looks like good alternatives, thanks for the suggestions.

I suppose a PC Power & Cooling 1200W PS is not sufficient to run an ANTminer S7 at the standard frequency?

1st post states that power consumption is 1300W.

MY s7 shows no hash.  All the chips are normal.  Temperature is below 80.
http://www.imageno.com/thumbs/20170705/wdenjvd73s94.jpg (http://www.imageno.com/wdenjvd73s94pic.html)

Have you tried resetting it?

See chapter 7.4 here:
https://shop.bitmain.com/files/download/Antminer%20S7%20user%20guide.pdf


Also make sure there is no extra space character after stratum server address or user name.

thanks.  I tried to reset it.  The green light is blinking, but no hash

I fixed it with restoring the corrupted cgminer.  System --> Upgrade --> Restore backup

I'm having a similar problem but flashing firmware (both to newer and back) don't seem to help.




Have 2 other miners working and I have copied and pasted settings for pools, I have also tried different PSU's.

Are the other miners in the same batch? Copying firmware from those miners might not work anyways because of minute batch differences. Find the batch number of the affected miners and download the firmware from Bitmain for them if that’s the case.

https://shop.bitmain.com/support.htm?pid=00720160511022802617GoPmQhNb06CF

I didn't copy the same firmware. This is a S7-F1 and I've been using fresh downloads of the 1FAN firmware from Bitmain.

Relink the image to Imgur? I’m having issues viewing the link for the image on the site you had it on.

Here you go.

https://i.imgur.com/ro75eNP.jpg (https://imgur.com/ro75eNP)

I notice the HW rate is unusually high. Sometimes it hashes at about 1gh/s as self reported on the miner.