Gigabyte H61M-DS2 will be restarted several times after being triggered before it can be lit for repair

After triggering, Gigabyte H61M-DS2 will restart several times before it lights up. Remove the R220 resistor and replace it with the fault.

Machine model: Gigabyte H61M-DS2 RVE3.0

Symptom: After triggering, it will restart several times before being lit

Maintenance process: the customer described that it can be normally lit after several restarts after triggering. After pressing the restart button, it can only be lit after several restarts. Because it is a novice, the voltage measurement only depends on the approximate voltage, not on the specific voltage, which makes a mistake.

Gigabyte H61M-DS2 will be restarted several times after being triggered before it can be lit for repair Figure 1.

Later, we looked at the circuit diagram and measured the voltage step by step. It was found that the voltage of pin 3 of Q24 was 2.4V (actually 1.8V). After finding the problem, we measured that pin 3 of U3A was also 2.4V, which was not equivalent to 2_ 5LEVEL came directly. It was judged that there was a problem with the resistance R220. The resistance value was only A Ω after the removal amount. It was determined to remove one from the feeding plate and replace it with another, install the U into the memory, start the machine, and light it up directly. Press Restart to not restart repeatedly. The fault was removed.