Since mine has the same probs as yours, what solution did Bitmain offer to you to rectify the faulty control board.
Nothing yet , waiting to hear back
Makes ya wonder why they constantly ship f'n lemons, also makes me wonder what I'll end up with out of the 4 units I ordered.
my miner drops down to 410-415GH. I would rather keep it running and pay a deposit so he would ship a new controller out and refund me after he receives the bad one than shut the miner down for a week or two.