Pls. find below my customer experience with Bitmain.
https://bitcointalksearch.org/topic/ethical-problem-with-bitmain-1141392
Topic: New Antminer S5 Not Hashing and showing Temp of Zero (Read 4964 times)
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It's not working control board, we had the same issue with a miner in skycoinlab.
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Have you found the problem?How did you fix it?
I think it is not about firmware, but bad control board.
It's not working control board, we had the same issue with a miner in skycoinlab.
I think it is not about firmware, but bad control board.
Try with several version of firmwares starting from newest to oldest who knows which version suits the best in your case.
It does not hash a any frequency higher then 100.
I have bought a Enermax Platimax 1000W PSU.I have tried it with the S5 miner.No difference.It only hashes (between 3 and 50) at 100 frequency.
There is temperature value at only one board.All chips seems to work (ooooooo).
I have also checked the cables.
Should I try to upgrade the firmware (I have resetted) ?
Any suggestions?
There is temperature value at only one board.All chips seems to work (ooooooo).
I have also checked the cables.
Should I try to upgrade the firmware (I have resetted) ?
Any suggestions?
I will receieve new PSUs today.I will report the results.
I am running one S5 with CX750 Corsair.If it is a borderline PSU we are in trouble we have more than a hundred with this configuration.
I am running one S5 with CX750 Corsair.If it is a borderline PSU we are in trouble we have more than a hundred with this configuration.
I worry for you check this review out.
http://www.hardocp.com/article/2015/01/21/corsair_cx750_750w_power_supply_review/4#.VbkQBXiov8s
you are somewhere in between test 3 and test 4
the psu flatout crashes on test 4. which is 60 amps at 12 volts or 720 dc and of course you should be using
1150 x .52 = 598 dc at stock settings while 600 out of 720 sounds good. if you run 24/7/365 you need to derate by 20% so 720 x .8 = 576 dc
and stock setting is going to use 598 dc.
So you are running them beyond safe derating. and we do not know what safe is since 720 failed so 720 x .8 = 576 is not really safe.
and you have 100 of them. I really suggest dropping your freq setting under stock 350 it simply is not safe.
But I am not an electrical guy. just a miner.
if I had to run those psu's with s-5's I would start at freq 275 and maybe raise a bit to 287.5 or 300
Well you did what you know it will work by the numbers but not all S5 are the same, you have various revisions of hashing boards and control boards and they do not behave the same. When I test problematic device I use Enermax Platimax 1000W just to be sure that PSU is not the culprit. I had situations where hashing pcb was damaged in some way probably because of too weak PSU and when I tried on Platimax everything worked well.
I will receieve new PSUs today.I will report the results.
I am running one S5 with CX750 Corsair.If it is a borderline PSU we are in trouble we have more than a hundred with this configuration.
I am running one S5 with CX750 Corsair.If it is a borderline PSU we are in trouble we have more than a hundred with this configuration.
Try with stronger single rail PSU and then report results.
this is good adviceusing a cx750 is using a borderline psu.
@ op or @ gabley12
also freq 100 is not too stable try freq 250 let it run for 20 minutes see if you get 750 gh or a little better then that
Try with stronger single rail PSU and then report results.
4 seperate cables on CX750.
The frequency is 100 because I wanted to try if it is a PSU related problem.I have several PSUs, same brand.When I tried the other one I get some hash at 100 frequency.Can both PSUs may be problematic?When I increased the freq to 300 or 350 it does not hash.
I cannot remember for sure on this. Does the CX750 have 4 SEPERATE pcie power cords? Not the connectors but actual cords going to pcie.
The frequency is 100 because I wanted to try if it is a PSU related problem.I have several PSUs, same brand.When I tried the other one I get some hash at 100 frequency.Can both PSUs may be problematic?When I increased the freq to 300 or 350 it does not hash.
I have got a similar problem.The only difference is I have got temperature '35'.
What do you suugest?I have ordered a PSU tester and will check PSU.Anyone who has an idea is wellcome.
What do you suugest?I have ordered a PSU tester and will check PSU.Anyone who has an idea is wellcome.
What model is your current PSU? Can you take a screenshot of your status page?
I have got a similar problem.The only difference is I have got temperature '35'.
What do you suugest?I have ordered a PSU tester and will check PSU.Anyone who has an idea is wellcome.
What do you suugest?I have ordered a PSU tester and will check PSU.Anyone who has an idea is wellcome.
I would definitely check the power supply. I have the same issue with one of mine, only to find out after getting a tester that one of my 12V legs was bad on the PSU.
Denis
Denis
A little late he solved the problem
- https://bitcointalksearch.org/topic/m.11479301
I would definitely check the power supply. I have the same issue with one of mine, only to find out after getting a tester that one of my 12V legs was bad on the PSU.
Denis
Denis
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