Avalon A1047 hash board repair tutorial

Avalon A1047 hash board maintenance tutorial course mainly explains the its repair from the aspects of the structure of the A1047 hash board, the powering unit and its signal transmission direction. The hash board has a total of 120 ASIC chips, and its core powering includes domain voltage, LDO1.8V and 0.75V, and has 4 signals.

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