Bitcoin Forum

Hi,
 One of my Antminer s7 stop hashing after 2 days, everything is all fine, I have checked with different power supplies and also with different Internet connection , I have also make it hard reset few times but it doesn't hash, I can't access it through any ip on my lan not directly with any pc, once I plugged in all pins and turn it on then after red and yellow light indication it's lan lights blink only while the hashing light which is yellow blinking during hashing doesn't turn on and it's not hash nor I can access it with lan as it doesn't appear in lan! please help.

1) upgrade to the latest firmware.
2) Try another PSU
3) Check boards/Fans.

Hope it will help you.

try only the PSU replacment.

If you are not able to troubleshoot yet, send an email to info@bitmaintech.com with the problems you are having, attach pictures to expedite the process. Since the miners are less than 30 days old, not many people have experienced what you are experiencing now.

Even if you are still working with it I would put in a ticket or email.  This get's it on record with problem and hopefully you have part of 90 day warranty still there.

I would agree a different PSU might be possible.  What is your current PSU model and how many watts?

I interpret the new warranty they have laid out for the S5+, S7 and for today to say you cannot remove the screws before you speak with them.

Although the instructions said to inspect each heatsink to make sure they were not dislodged.

I am only throwing that out there to reiterate the need to be in touch with info@bitmaintech.com
That is the only place you will get warranty help, and you need it.

How can I upgrade to latest firmware as I can't even access the machine through IP or LAN.
I have checked with several PSU as I got 22 Antminer s7 from first batch.
Fans and Boards seem to be working fine but can't access the machine as it doesn't connect to the LAN or doesn't assign the IP to access the interface.

Already sent an email to BITMAIN hope to have this solve soon

I would think if you are running that many S7 miners you should invest in some of those long controller cables so you could plug a couple miners into one controller in case one goes down as that is what you may very well have. I believe it was said one controller can run up 9 boards or 3 miners. It would help a lot in trouble shooting a problem.

Any other S7 related technical questions please put in the main S7 thread (https://bitcointalk.org/index.php?topic=1165628.0) or in one of my threads. Making a new thread for every problem dilutes the ability to help, clutters the subforum and blocks out others.

[OT]
Listen to him. Otherwise dogie  abuse again Trust Rate süstem, and makes you a false accusation negative, as it is written to me already 2 times (He erased the first negative comment )

dogie- You  never will  be here  Moderator, You're too conflictual person for that.

Themes emerge and die, let them go down the natural way.

[/OT]


Only 6 boards with September and October firmware.


They will tell you the same, try test  miner with  another S7 miner controller.

How can I connect one controller to different boards or one controller for multiple s7?

Can you guide how to connect single controller for multiple boards or s7?

You should find your answers here...https://bitcointalk.org/index.php?topic=1173573.0

I have just tried with another controller, but it's not turning on, I have tried connected several hashing board to different working s7 controller but it's not turning on nor hashing, even when I change the position of the plug or put the 18 pin plug to another empty pin while it's  same working machines board but the hashing board doesn't start, any help please

Do not you have a screwdriver ?
you can take the S7 controller from working miner and replace it iwith  the non-working miner controller.

So you can find out, it  is the  controller fault or not . As I understand, you already did it.

If with the other controller miner does not go to work, it is hasboard(s) fault.

I will try this option now by removing one controller from one machin to check with the one which is not working

The problem is likely your controller.

To get your 6 boards to work on one controller, copy the 18 pin data cable connection layout from the forum link posted before.

If you plug them into the wrong plug the controller won't recognise the hashing board.

I have the same problem with one of my controllers.

One of my boards in one miner won't show up unless I don't power on my controller board for about 10 minutes after the hashing boards. But they still drop out eventually. Sometimes 2 days, but other times, like right now, within minutes of running.

Actually the problem is in hashing board, I have tested few working controllers with machines, while it's controller is all fine, it's even shows the ASIC chips, temperature and fan rpm but it doesn't hash even after few minutes the controller got unaccessable while machin keep turn on the  red light.

EVEN BITMAIN TECH DOESN'T RESPONSE

Send a letter  to info@bitmaintech.com

I sent a few days ago 3 x S7 blades to repair, but my blades all show  temp 0

I have sent them email few times in different time but they are not responding. That's very unfair

I'll keep my 5 bitcoins thanks

You need to do this because ANTMINER S7 BATCH 7 - is  Sold Out

So what happened?Were you able to solve the problem?

never never never never do firmware upgrades 80% of bitmaintechs  firmware upgrades were bad.

I would not even mess with updates unless there is a big security issue, or big feature addition.  It is just risk in most  cases for not much.  If it works why mess with it?

But phil is right never stop or close window during firmware update.  I have had one power issue on S3 during firmware ... and it made a brick.  Ever since then I'm very careful on updating.  I'm guessing they have you send in controller and they ship one back working.  Depends on if you have warranty still on the price.

So if you can not access to the miner and everything seems ok it means the control board has been broken.Well...But why?What is the reason?

Most common reason is problem with update.  If problem during it can make a brick.

So there is a reason.  I'm guessing they say send it in and send back one that has working firmware, or possible reprogram same unit and send it back.

I want to share my experience about S7 units not hashing.The problem is either BB or IO.Check the legs of IO.If all legs are ok (undeformed, check the IO with voltmeter).If everyting ok te problem is BB.Do not try to fix the BB but just buy another and replace.

Hello ,
Same problem here .After 10 day my S7 batch9 work with only 6 chips on board

http://imgur.com/yoMfL7a

OP take a step back and breath.  You have tested IO board, bb board, psu, so you have done a lot of the initial testing.  Send a email to address Tupsu mentioned.

You might not get a email back right away if they are busy.  If you don't get it in a few day's try again.  Make sure to include in email all that you have tried to show them what has not worked.   

I have the same problem
 ??? ??? ??? ???

I dont know what to do

Yesterday I've had found a problem with one of my miners (S7). It started to make a sound (internet connection problem, I supposed) but it was only one of my seven antminers, I thought "this is rare" so I enter in the interface and everything looks good and then I reboot the miner... The sound stop and in the interface everything looks good for the first minute and then the GH/s started to go down until 0 and the interface stayed forever thinking, they won't showed me nothing more, just thinking and thinking.
Things I've already checked:

1. I've changed the PSU, same problem.
2. I've changed the router, same problem.
3. I've changed the IP address, same problem.
4. I've changed the miner network from dhcp to static, same problem--> when I restart the miner it let me do some things until the GH/s arrive to 0, then I can't do anything. So I have to act quickly.
5. I've change the IP address reservation from my router, same problem.
6. I've changed the BB and IO board, same problem.
7. I've had made a few hard resets, same problem.
8. I've already sent an email to info@bitmaintech.com

I don't know what else to do.

Probably the problem is about your fans.One or two of them may be working not working or with lower performance.
Pls. check the fan speed with eye inspection.Switch fans with working miners.If not solved pls give feedback.

Serves you right for buying from a shady, sleezy characters at Bitmain. If you have a boat, use your non-working S7 as a boat anchor. I've done it myself and my boat feels less rocky.

Is the problem solved?

That was a USELESS response..sheez!!

Well bitmain won't help much.. if you are usa based you could try bitmainwarranty.

you could buy some avalon  741's here

https://canaan.io/


they will send you here

https://minerwarez.com/

https://minerwarez.com/collections/new-equipment

I can attest to that,  your fans can cause your s7 miner to freak out.  Sometimes they may seem like they're working right but they're not.

Do an eye inspection to see if both are spinning at the same speeds and so check out the speeds in your miner status. They should be both at around the same speed which is >3000

faulty fan will make miner blink red