Re: please help on antminer s9 GH/S(RT) is showing 0.0000

Fortunately, bitmain sent me a free s9 control board even though i am out of warranty already. thanks to bitmain

can you tell me how do you contact with them?? i have same problem now and nees to fix soon Sad

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Does the problem persist no matter what controller ribbon you have the board plugged into?