Avalonminer A921 hash board single board report 0 failure

When the tester detects the Avalon 921 hash board, the log shows 0 ASIC chip, how to repair it? First check whether the powering unit is short-circuited, and then whether the voltage of the powering unit and the core powering of the ASIC chip are normal. If all voltages are fine, the next step is to check the CLK signal with an oscilloscope. This video will explain and demonstrate the troubleshooting of the Avalon 921 hash board.

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