Asus H61M-E repeatedly restarted for repair

Asus H61M-E was restarted repeatedly, the pull-up resistor was replaced, and the fault was repaired.

Machine model: ASUS H61M-E

Symptom: Repeated restart

Maintenance process: get the machine, measure the resistance value for each big voltage, 1.8V is high, 3.3V is measured, replace the conversion tube PQ22, which is the same. Measure the G level control voltage, 5.8V is high, 4.2V is normal, PQ22 G level is connected to 8 pins of 324 comparator, and the measured 10 pin voltage is 3.3V, 1.8V is normal, 3.3V is voltage, obtained by dividing the two resistors, measure the resistance value of the pull-up resistance, 5K is normal, 10K is normal, replace the pull-up resistance, The voltage of pin 10 of 324 comparator recovers to 1.8V, then measure PQ22, the output voltage is 1.8V, and the maintenance is over.