Dell la-d801p motherboard no power

[alex26]

Hello.
I need help with a laptop Dell with LA-D801P motherboard.
The laptop completely died, no power, no leds.
The voltage of 19V is present at the output of the second mosfet.
The voltage on Pin 9 and 19 of PU102 is 0V.
Voltage on
PU100 :
pin2 =19v
pin11 =4.16v
pin12 =0.18v
pin17 =0v
pin19 =0v
I have 0 ohms on the coils PL100, PL301 and PL700.
If I remove pjp102 the short remains on the side of +3VALW.
Then I removed pjp501 and pjp801 but the short did not go to the integrated PU500 and PU800.
Then I checked UZ3 and here I had a short on pins 6 and 7.
Here I injected a voltage of 3V and 1A on pins 6 and 7, then I increased the amperage because I couldn't see anything hot under the thermal camera and only at 4-5A did I notice that the processor was heating up. What else could I do and what did I do wrong?
PU703 I replaced it but it had no effect.

LINK to schematic https://www.badcaps.net/forum/troubl...74#post1242174

Any help appreciated, schematic attached.
Thank you in advance!!!

[mcplslg123]

PL700 shouldnt be shorted to GND. Are you sure about it?
However, a dead short to GND on +3VALW coupled with +1.0V rail is almost a sure shot indicator of shorted PCH. So perhaps end of story.

[alex26]

Yes, PL700 and 1.0V is shorted to ground, and thats the end of story. Thanks.