Acer Helios 300 N20C3- Dead Shorted mosfet blows

[fallenapples]

Hey all

Have the above laptop which is shorting out the power supply. 19v when plugged into the wall then when inserted into the laptop ir reads nothing untill you remove it from the wall and plug it in again.

i found PQZ3 shorted so removed and confimed short gone.

replaced PQZ3 and it shorted again?

ive removed PQZ3 again and tested pads but theres no shorts there.

[fallenapples]

Re: Acer Helios 300 N20C3- Dead Shorted mosfet blows

Schematics attached

[Stevedb]

Re: Acer Helios 300 N20C3- Dead Shorted mosfet blows

You need to check pzr83 en prz81 replace driver puz4