Probably best to fix it while still under warranty
You think? Anyone have any experience as to how long Bitmain normally take on repairs? Would I have to pay shipping? If so, its not worth it.
I'd rather send back the dodgy board than the whole unit. That way I'd at least be hashing at 4.3 TH/s
Bitmain Hong Kong requires you to ship the entire unit, you can not send just the board.
If you are sending to Bitmain Warranty in Denver then you will have to pay for repairs regardless if it is still under warranty or not. I just sent them one of mine so I will report back on timeline/cost for the fix.
Someone suggested sending to Sidehack previously for repair. If he can make time and is willingly to do so, I might send my inop batch 4 to him so we can get feedback on what is causing all the failures. If it is an easy fix, maybe we can avoid sending equipment back to Bitmain and just repair at home