Hi guys, i'm new to mining and just hooked up a used s7 today. When i check the antminer status page, it shows 2 boards with normal temps of around 60 deg. but board #1 shows very low temps of around 15 deg. I've tried to do a factory restore and it didn't help. Asic status shows all zero's, no x's or missing values. Only hashing around 3th/s. Bad board?
Can someone point me in the right direction? Thanks for your help!
A while back I picked up an S7 off Ebay. It appeared in really good condition so I put it straight to work without a thought. But every so often, about once a day, it would do like you describe. One board would stop hashing, no errors that I could see other than low temp. Since it was old and out of warranty I pulled the fan screws and then the other 4 screws that retain the end cap which in turn retains the hash boards. With that off and all cables disconnected (power and controller connectors), I slid each hash board out for inspection. I honestly wish I had taken a picture, but on one of the boards there was a giant moth partially against the heat sink and PCB. I don't know if he was grounding something out or just overheating one chip, but after his removal it's been working away for roughly 9 days now and no issues.
Long way of saying, probably best to remove the hash boards and inspect them for dirt, debris, or damage.
