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Why is my AntMiner S5 chain only intermittently operational? What could cause this, how could I diagnose it, and what is the solution? Will BitmainTech replace it for me? How do I know if it's under warranty? Is there a warranty?
AntMiner S5 chain #2 intermittently operational
Answers
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Why is my AntMiner S5 chain only intermittently operational?
It's due to hardware failure.
Will BitmainTech replace it for me?
Yes, I had the same issue. I had to pay to ship it back to them, and they very promptly shipped back a replacement board.
How do I know if it's under warranty?
Ask them. They're able to figure it out for you.
Is there a warranty?
Yes, I believe it's 3 months (90 days).
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Someone suggested:
And first look through - https://bitmain.zendesk.com/hc/en-us/articles/204875015-How-to-diagnose-S5-hashing-PCB
Then if needed try - https://bitmain.zendesk.com/hc/en-us/articles/203559969-My-S5-hashes-at-about-600GH-S
Oddly, I unplugged the "Power Cable to Control" (with it still running), which cut the power to it, and plugged it back in. I also sprayed the Chain #2 board with some electrical contact cleaner, and that helped. Now the little red light on that board is on!
Update: But the it's no longer on now! ☹ It just shows: "------ -------- -------- -------- " in the "ASIC status".