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1. What is the reason for the power module burning out?

Based on the on-site situation and circuit diagram analysis, it can be concluded that the cause of the power module burning is a short circuit caused by U1 and its series resistor R4.

2. The consequences of burning out the power module

The power module was burnt out, causing the system to crash

3. Repair methods for power modules

Before turning on the computer, please turn off all devices connected to the power outlet.

2. Disconnect the power cord.

3. Use a clean cloth to wipe the power socket and power cord terminals.

4. Connect two metal wires to the power cord terminals respectively.

5. Check if there is an open circuit between the two metal wires.

If there is an open circuit, please cross or connect the two metal wires together until the circuit is repaired.

If the fault still exists after repairing the circuit breaker, it indicates that the power supply is damaged and needs to be sent for repair.