Avalonminer A921 hash board repair tutorial
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Avalon A921 hash board has a total of 26 ASIC chips. The hash board has the same structure as the A821. Each chip is a voltage domain, and the voltage domains are connected in series. There have domain powering, LDO powering and boost circuit powering. The maintenance of the A921 hash board is mainly to repair the powering and signals. The repair idea is to check the voltages first, and then check the signals.
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