Colorful H310M-E V20 motherboard does not trigger repair

Main board model: colorful H310M-E V20 main board

Fault symptom: The motherboard does not trigger.

Maintenance process: a colorful H310M-E V20 motherboard, the fault is that the motherboard does not trigger, the measuring switch is 3.3V, the standby is normal, CLP_COMS 3.3V, and there is a pressure difference between the two feet of the crystal oscillator.

Colorful H310M-E V20 motherboard does not trigger maintenance Figure 1

Colorful H310M-E V20 motherboard does not trigger maintenance Figure 2

Find the foot bitmap of IO IT8613E.

43 feet RSMRST3.3 is normal;

33. The foot switch has a jump;

34-pin PS_ON 5V Press the back of the switch to 0V, but the motherboard does not start. Measure the green line voltage of the power interface at 3V. If it is not pulled down, it must be disconnected.