Antminer S9 hash board troubleshooting for LDO powering circuit

The LDO powering of Antminer S9 hash board is composed of 1.8V and 0.8V powering, and 0.8V is obtained by dividing the voltage of 1.8V powering through two resistors in series. An abnormal powering of any LDO chip will cause the ASIC chip to fail to operate normally. This video will explain in detail the working principle of the LDO powering circuit, and demonstrate the measurement and repair methods.

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