IPad 6 A1893 is not turned on for maintenance

IPad 6 A1893 is not turned on for maintenance.

Model: iPadA1893

Fault: No boot.

Process: Connect an iPad to the customer, and describe the fault as no startup, no response when plugged into the charger, and no charging current. Disassemble the motherboard, connect the ammeter to test the short circuit, cut off the multimeter to measure the motherboard, and find that the 3.3V power supply capacitor of the power output is short-circuited, deduct the short-circuited capacitor to test that the resistance of the motherboard is normal, press the power-on key, the motherboard will start with normal current, and the test screen will be installed. Other functions are normal!