Compal LA-9531P schematic at revision 0.1, offered as a second copy of that set and weighing 2.57 MB as a PDF. This is the earliest revision in the LA-9531P series, so component values and net names may not match later production boards; check the revision on the PCB first. The Compal LA-xxxxP board code does not reveal the laptop brand, which the name also omits. Open it in any PDF reader to trace power rails, check the power-up sequence and locate the parts causing a short.
The button opens the matching file on RM Schematics, or a source page if it is not catalogued there yet. The original attachment is from @schematicslaptop. Enginerys does not host this file.
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How to open a .pdf file
The standard format for schematics, block diagrams, power-sequence charts and service manuals.