Hi, my friend have this laptop. Her laptop cant boot, it always blinked power led.
After i remove and check mainboard, i can hear buzzing sound at VGG mosfet. Mosfet already replace but buzzing still exist (and voltage show from 1v to 0v and then 1v again at VGG inductor).
I found that CPU/GPU power ic pin that have 0.05 ohm (voltage never changed, 0v and this is VGG_sense) and this pin connect directly to BGA CPU
Is this normal or shorted?
After i remove and check mainboard, i can hear buzzing sound at VGG mosfet. Mosfet already replace but buzzing still exist (and voltage show from 1v to 0v and then 1v again at VGG inductor).
I found that CPU/GPU power ic pin that have 0.05 ohm (voltage never changed, 0v and this is VGG_sense) and this pin connect directly to BGA CPU
Is this normal or shorted?
