Which part mostly fails on +3VALW

Hello,

I’ve got this device for changing the screen.

Did the standard procedure; disconnect battery, replace screen, connect battery but after changing the screen the device won’t react on anything. No status LED’s, no reaction to power button, no fan spin.

Looked over the schematic and desoldered some jumpers. I came to the conclusion that theres a short to ground on the +3VALW rail but I’m not able to find the faulty part.

Thanks in advance