Whatsminer M31 hash board related voltage and circuit measurement method

Detecting whether these voltages are abnormal is a necessary step for repairing Whatsminer M31 hash boards. The main voltages of this hash board are: domain voltage, output voltage of boost circuit, voltage of temperature sensor chip, voltage of 5 signals, voltage of RXD signal level conversion chip, voltage of memory chip, and the voltage of the LDO chip per domain. This video will mainly explain the measurement methods of these voltages and the corresponding voltage values.

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