ASUS EX-B150M-V3 without horse racing repair

Asustek ASUS EX-B150M-V3 does not run the horse, short circuit the resistance, force the voltage to run the horse, and the fault is removed.

Machine model: ASUS EX-B150M-V3

Fault phenomenon: no horse running

Maintenance process: The clock signal is normal, but it is not reset. Check whether the CORE power is supplied. Check the chip pin definition. Some of the power supply is not turned on. The turn on signal has a 3V load resistor and MOS tube.

I thought that the MOS tube G level was powered, so I removed it directly. The switching voltage was still the same. So we plug in the signal sources related to EN, which can support the PGs of VDDQ and VCCSA. But there is nothing. I still want to change any PG, but there is still no voltage. I was wondering if it was a problem with the voltage of 3V, so I turned on the resistance and found that there was no problem. Then I shorted the resistance and forced it to the voltage, so I could run the horse. The resistance to the ground was also normal. This is the end of troubleshooting and maintenance.