Antminer S9 Hashing Board Issue

[gtopba]

My GH/S(avg) decreased from 12,600 to 11,400 due to several "x" on one hashing board. Moreover, this board does not have GH/S(RT) indicated. I restated the miner by disconnect the power a lot of times but it won't help. Does anybody have the same problem? What is your experiance with the bitmain warranty?

This is the screenshot.
https://imgur.com/a/y0VQk

[philipma1957]

Drop freq to 593 then show a ten minute screen shot.

If x does not go away drop freq to 587 then show a screen shot after ten ,minutes .

What country do you live In?

You will spend a lot of money shipping to,bitmaintech in China .

I am using Colorado and bitmainwarranty I have a thread on my warranty issues in hardware.

I won't ship to China since it costs more then 100 usd to ship 1 dead board.  Plus you have to list the board as 45 value. So if it gets lost or broken you can only be insured for 45 usd.

Try to contact bitmainwarranty if,you live in the usa

[gtopba]

Thank you for you suggestion. I live in Thailand. After a few attemps to upgrade the lastest firmware, the average speed increased to 12,500 GH/s. But I'm not sure that the speed will remain after restart, so I'm not dare to do it. As you can see, the chips are not really die, instead it seems like a software problem. The shipping cost to bitmain china would be around $35, but I don't want to risk lossing or damaging the board. I have emailed to bitmain support, but no any response yet except the autogenereated reply.

It is not usual "x" everybody know. It will not dissapear easily by disconnecting power. For now I lost 100 GH/s in total. Mine is batch 6 12.93 GH/s model. 

This is the screenshot.
https://imgur.com/a/hxGCF

[notlist3d]

Thank you for you suggestion. I live in Thailand. After a few attemps to upgrade the lastest firmware, the average speed increased to 12,500 GH/s. But I'm not sure that the speed will remain after restart, so I'm not dare to do it. As you can see, the chips are not really die, instead it seems like a software problem. The shipping cost to bitmain china would be around $35, but I don't want to risk lossing or damaging the board. I have emailed to bitmain support, but no any response yet except the autogenereated reply.

It is not usual "x" everybody know. It will not dissapear easily by disconnecting power. For now I lost 100 GH/s in total. Mine is batch 6 12.93 GH/s model.  

This is the screenshot.
..

Chain 4 is not showing a realtime speed and if you look above the reatime is around 8.  What happens to speed after a few more hour's of running?  Just checking if it goes down closer to the 8 or what happens.

Phil's idea of running at a lower frequency would be next thing you should do if it does drop hashing speed after a few more hour's.   It can help if you do have some bad chips doing this sometimes.

[philipma1957]

Looks like you have a dead board.

What does the gear show at the pool?


And your are correct it does not look like s-1 s-3 s-5 s-7 type x

It looks like you are about to lose the board fully.

If you have not done so already.

[gtopba]

Hi

The realtime speed is around 8000 but the average speed is at 12,400. I just checked my one day hashrate at Slush pool. It is 12.38 Th/s. I'm not sure why the realtime speed does not show from this board, but it seems to work well for the pass 3 days. Maybe there is a bug in the hashboard firmware?

[notlist3d]

Hi

The realtime speed is around 8000 but the average speed is at 12,400. I just checked my one day hashrate at Slush pool. It is 12.38 Th/s. I'm not sure why the realtime speed does not show from this board, but it seems to work well for the pass 3 days. Maybe there is a bug in the hashboard firmware?

It's hard to say without looking at the miner remotely or in person.  Most of time if realtime showed 8 and average showed 12+ over time we would expect it to slow down to the 8 area.   That number and lack of number of board made it appear this way.

But if you are getting poolside 12+ for 3 day's in a row sounds like it is error in reporting vs a problem with a hashing board.  Which is a lot better really them having a hashiing board going out.  I would keep an eye on it but sounds like it's working good and I would not mess with it on firmware or other setting's at this point as long as you keep getting that good poolside hashing speed.

[mettalmag]

I used to have same issue with one of my S9-s B13.
I tried to restarting, reconfigured it couple times, did a reset couple more times, but nothing was helping, I messed with frequencies as well but still nothing, only two boards were hashing. I didn't messed with firmware at all.
After a while ago the dead board showed itself and now it is hashing without any issues. I don't know what happened but as long as it is working I won't mess with it.