Antminer S19 Pro hash board troubleshooting for 19V boost circuit

This video mainly explains the 19V boost circuit of the S19 Pro hash board from the schematic diagram and the actual circuit of the hash board. This circuit mainly boosts the 13V input voltage of the power supply and then outputs a voltage of about 19V to supply power to the LDO chips in the last 7 groups of domains. Notice: this boost circuit is different from other hash boards. For this circuit to have a normal output, pin 11 of the PIC chip needs to output 3.3V voltage.

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