ANTMINER S7 is available at bitmaintech.com with 4.86TH/s, 0.25J/GH

[daehbew]

When I first connected everything as:

2 PSU's (1000 watts ea)
following the antminer s7 manual configuration
everything was working just fine 4.xx gh/s and all chains up..

http://daehbew.weebly.com/uploads/1/7/6/9/1769491/6646206_orig.jpg

then I a few days later I noticed only one chain was mining.....
I've been troubleshooting:

1) physical reset
2) reset in miner settings on website
3) reboot
4) swapped psu's..
5) lowered the frequency..

nothing so far seems to be bringing the other chains online.....
any ideas?
looking for any support I can get to bring those other chains back online!

Thanks in advance!

******************edit / update *************

just some amplifying data..
from right to left (standing on side where network plug goes in facing the fan) , after the 4th plug.... (before the 5th)
there is a red light on  (not sure what that means)

[philipma1957]

When I first connected everything as:

2 PSU's (1000 watts ea)
following the antminer s7 manual configuration
everything was working just fine 4.xx gh/s and all chains up..



then I a few days later I noticed only one chain was mining.....
I've been troubleshooting:

1) physical reset
2) reset in miner settings on website
3) reboot
4) swapped psu's..
5) lowered the frequency..

nothing so far seems to be bringing the other chains online.....
any ideas?
looking for any support I can get to bring those other chains back online!

Thanks in advance!

******************edit / update *************

just some amplifying data..
from right to left (standing on side where network plug goes in facing the fan) , after the 4th plug.... (before the 5th)
there is a red light on  (not sure what that means)

I suspect low quality psu.

make and model of your psu's would be helpful

[wolfen]

When I first connected everything as:

2 PSU's (1000 watts ea)
following the antminer s7 manual configuration
everything was working just fine 4.xx gh/s and all chains up..



then I a few days later I noticed only one chain was mining.....
I've been troubleshooting:

1) physical reset
2) reset in miner settings on website
3) reboot
4) swapped psu's..
5) lowered the frequency..

nothing so far seems to be bringing the other chains online.....
any ideas?
looking for any support I can get to bring those other chains back online!

Thanks in advance!

******************edit / update *************

just some amplifying data..
from right to left (standing on side where network plug goes in facing the fan) , after the 4th plug.... (before the 5th)
there is a red light on  (not sure what that means)

The red light means that hash board is working. Guess the other two are not.
S5's have red lights also, when they are not lit hashboard is bad.

edit****
Oh you mean the red light on the control board by the flat hashboard ribbon cables?
I was talking about the red light on each hashboard by the power connectors.

[daehbew]

when I swap psu around; either psu works and I've test the terminals and they all read 12v as they should..

so.. red light on s5 = bad board?

should I troubleshoot the board or something..?
I sent email to antminer.. but I suspect it may take some time to hear from them..

***********just a sec.... I'll clarify with a pic...***************

[Biodom]

I think that boards temp discussion is very interesting.
I am in fullzero camp that says that increased board temp is beneficial for speed (at least to 56C from 51C in my case) with everything else being equal.
However, what is the best way of raising temp?
At least in my case, i found doing so by lowering fan to be tricky: I had an occasion of miner losing login and killawatt going bad and essentially disconnecting the miner AFTER i was trying to lower fan. Maybe it was just a coincidence, but I also saw intermittent X on one chip at fan setting 60 or so (incidentally, whichever setting results in ~3900 rpm, this produces the most annoying sound with anything 5% above or below being much better).
To me, it looks like raising board temp to 56 by partly closing the door to "mining" room or providing slight obstruction (by tunneling the exhaust) to the air pass resulted in temp rising to 56 and ~40-50GH more hashing. I did all attempts at frequency 600.
The main question is: would rising board temp to 56 or even 60C affect the lifespan of the machine? In S5 it did not, but it remains to be seen here.

[philipma1957]

when I swap psu around; either psu works and I've test the terminals and they all read 12v as they should..

so.. red light on s5 = bad board?

should I troubleshoot the board or something..?
I sent email to antminer.. but I suspect it may take some time to hear from them..

***********just a sec.... I'll clarify with a pic...***************

how do you test the psu terminals?

 under load or unplugged?

make and model of psu and show me how you test the psu volts?

the symptoms you show so far are poor quality psu.

and under load 12 volts is very difficult most psu sag  a bit mine are 11.96 under a  full load.

see photos below

[daehbew]

here's the pics..... to assist with above post **********

http://i1377.photobucket.com/albums/ah45/daehbew1/CAM02410dsad_zpsmk9r2l91.jpg
http://i1377.photobucket.com/albums/ah45/daehbew1/CAM02409fda_zps04tkazxm.jpg
http://i1377.photobucket.com/albums/ah45/daehbew1/CAM02412_zpsusuodrzy.jpg
http://i1377.photobucket.com/albums/ah45/daehbew1/CAM02411_zpsy7ko7rjg.jpg

[wolfen]

when I swap psu around; either psu works and I've test the terminals and they all read 12v as they should..

so.. red light on s5 = bad board?

should I troubleshoot the board or something..?
I sent email to antminer.. but I suspect it may take some time to hear from them..

***********just a sec.... I'll clarify with a pic...***************

Red light on s5 is good, if red light out bad.

Red light on controller board is normal.

Do you have a red light on each hash board near the power connectors?

Yes the pic of the flat hash cables is normal with the red light.

[daehbew]

when I swap psu around; either psu works and I've test the terminals and they all read 12v as they should..

so.. red light on s5 = bad board?

should I troubleshoot the board or something..?
I sent email to antminer.. but I suspect it may take some time to hear from them..

***********just a sec.... I'll clarify with a pic...***************

Red light on s5 is good, if red light out bad.

Red light on controller board is normal.

Do you have a red light on each hash board near the power connectors?

so in the above pic, what is your diagnosis for that?
(and can it be fixed?)


[ thx for all support -- everyone btw ^_^ ]

[wolfen]

when I swap psu around; either psu works and I've test the terminals and they all read 12v as they should..

so.. red light on s5 = bad board?

should I troubleshoot the board or something..?
I sent email to antminer.. but I suspect it may take some time to hear from them..

***********just a sec.... I'll clarify with a pic...***************

Red light on s5 is good, if red light out bad.

Red light on controller board is normal.

Do you have a red light on each hash board near the power connectors?

so in the above pic, what is your diagnosis for that?
(and can it be fixed?)


[ thx for all support -- everyone btw ^_^ ]

So it runs ok for a few days.
Then two boards out.
Then you cycle the power and it is ok again?

[carlosmnk]

when I swap psu around; either psu works and I've test the terminals and they all read 12v as they should..

so.. red light on s5 = bad board?

should I troubleshoot the board or something..?
I sent email to antminer.. but I suspect it may take some time to hear from them..

***********just a sec.... I'll clarify with a pic...***************

Red light on s5 is good, if red light out bad.

Red light on controller board is normal.

Do you have a red light on each hash board near the power connectors?

so in the above pic, what is your diagnosis for that?
(and can it be fixed?)


[ thx for all support -- everyone btw ^_^ ]

Did you test with only 1 psu? I mean, only connect the control board and 2 hashing boards (or better, only one, but test all three). And try with the 2 psu... 
good luck!

[philipma1957]

this is one of the 2 psu's



http://www.coolmaxusa.com/productDetailsPower.asp?item=ZPG-1200B&details=spec&subcategory=140mm&category=80plus


correct?

[kmitz]

With my S7 it's working fine. HW went down big time

@beffje, thanks for posting this.

What's the input air temperature that gets you to 60°C? And how unpleasant is the fan noise at that speed (~2200RPM)?

[Biodom]

With my S7 it's working fine. HW went down big time

@beffje, thanks for posting this.

What's the input air temperature that gets you to 60°C? And how unpleasant is the fan noise at that speed (~2200RPM)?

not @beffje, but
it is only unpleasant at ~3900 rpm for my ears.
I would say that if you can get a S7 safely to 2200, then you will be surprised how little sound comes out of it (it is much less than S3, which was good).

[kmitz]

With my S7 it's working fine. HW went down big time

@beffje, thanks for posting this.

What's the input air temperature that gets you to 60°C? And how unpleasant is the fan noise at that speed (~2200RPM)?

not @beffje, but
it is only unpleasant at ~3900 rpm for my ears.
I would say that if you can get a S7 safely to 2200, then you will be surprised how little sound comes out of it (it is much less than S3, which was good).

Thanks

Less than the S3? Sounds almost to good to be true!
I have no choice but running the miner a few meters from my working desk, so the noise level is kind of critical... The S5 was a monster, I had to mount quieter fans but then it got hard to cool. Ambient air had to be ~20°C to keep the miner below 60°C.

How about the noise from APW3 PSU advertised by Bitmain?

[daehbew]

this is one of the 2 psu's



http://www.coolmaxusa.com/productDetailsPower.asp?item=ZPG-1200B&details=spec&subcategory=140mm&category=80plus


correct?

yes

[philipma1957]

this is one of the 2 psu's



http://www.coolmaxusa.com/productDetailsPower.asp?item=ZPG-1200B&details=spec&subcategory=140mm&category=80plus


correct?

yes

power all gear off.
fully disconnect the other psu.

okay it has 4 pcie cables that plug into the psu.

plug in 1 pcie cable to the controller
plug in the other 3 cables to just 1 board.

power up at freq 600

you should have 1 board on.

do what I say above and post  a  couple of screenshots of it mining.

one quick and one 20 minutes later.

[ZACHM]

Received my two S7's today.  

Order/Pay Date: 9-8-15      Shipped: 10-16-15      Received: 10-19-15
Order/Pay Date: 9-16-15      Shipped: 10-16-15      Received: 10-19-15

No brokerage fees, taxes, or any additional anything.

I will have them plugged in and running tonight when I get home.

[wolfen]

With my S7 it's working fine. HW went down big time

@beffje, thanks for posting this.

What's the input air temperature that gets you to 60°C? And how unpleasant is the fan noise at that speed (~2200RPM)?

not @beffje, but
it is only unpleasant at ~3900 rpm for my ears.
I would say that if you can get a S7 safely to 2200, then you will be surprised how little sound comes out of it (it is much less than S3, which was good).

Thanks

Less than the S3? Sounds almost to good to be true!
I have no choice but running the miner a few meters from my working desk, so the noise level is kind of critical... The S5 was a monster, I had to mount quieter fans but then it got hard to cool. Ambient air had to be ~20°C to keep the miner below 60°C.

How about the noise from APW3 PSU advertised by Bitmain?

Has a small fan (1 1/2 inch)but makes a bit of racket

[edonkey]

My order is stuck in customs and FedEx is asking for a better description of a "Bitcoin Miner". This is irritating because my first order was delivered without any customs nonsense.

The good news though is that at least I know where my miners are. I'm no longer in Bitmain limbo.

I can of course give them an answer. But does anyone have a concise description that you've successfully used in the past to get your miners through customs?

Currently I'm thinking somthing like this:

Specialized computer hardware whose sole purpose is to maintain the Bitcoin network by attempting to solve complex math problems.

If anyone has the magic language that worked for them, I'd appreciate it.