Ying H310MHC2 REV7.3 does not show maintenance

Ying H310MHC2 REV7.3 doesn’t show, measuring 2 feet EN3.3V is normal, 3 feet VIN3.3V is normal, 6 feet have no output, and there is no short circuit to the ground. Just replace APL5933C, and the maintenance is over.

Machine model: Yingtai H310MHC2 REV7.3

Fault phenomenon: No power supply for the whole board is displayed.

Ying H310MHC2 REV7.3 does not show maintenance figure 1.

Maintenance process: the main power supply voltage of the whole board is not measured, and 2.5V is not measured first. The chip is APL5933C.

Ying H310MHC2 REV7.3 does not show maintenance figure 2.

Measuring pin 2′ s EN3.3V is normal, pin 3′ s VIN3.3V is normal, pin 6 has no output, and there is no short circuit to the ground. So, just replace APL5933C (the chip pointed by the arrow is APL5933C), turn on the machine, and repair is over.