: Technicians frequently look for the +VSBP enable signal; if missing, some bridge the 19V rail to pin 1 of inductor PL3 as a diagnostic step.
The LA-7912P Rev 1.0 boardview has several practical applications: la-7912p rev 1.0 boardview
Click on a pad for +3VPCU . The software will highlight every pin, via, and component connected to that net. This is how you find a short—look for the 10 capacitors all turning the same color. : Technicians frequently look for the +VSBP enable