Greetings,

First of all excuse me for speaking in English.

I got a Lenovo L420. The main problem was that it wasn't turning on and no LEDs light up. I replaced RT8206M, PR280 2.2Ohm and U11 which was a uP0104p. The laptop now turns on for a sec, there is LED indication, it has +3V and +5V, but i got short at +VCCSA. There was a short at PU9005 (OZ8117) pin 17. Removed it until i get a replacement. Tried to test without IC, but then i got a short one after another at PD1009, PC9115, PQ9033, PQ9034. I replaced the mosfet a couple of times but the always short. Removed PD1009 and PC9115 and again i got short at the mosfet. Any help would be appreciated.

Regards

Mosfets will always short out while it's gates are not grounded or connected to ic. It's not recommended to plug in DC, while mosfets are on the air. Put good OZ8117, only then plug in DC, or they will burn out every time.