Use a multimeter in continuity mode to trace the short on the B+ rail. Inject a low voltage (1V to 2V, 2A) into the B+ rail and use a thermal camera or isopropyl alcohol to identify the component getting hot. 2. Corrupted BIOS or EC Firmware
A schematic is typically used alongside a , which shows the exact physical location of each component. When used together, these tools allow you to understand both where a component is and what its electrical function is. lae791p rev 20 schematic diagram verified
The schematic diagram (also known as the Compal CSL50/CSL52 motherboard used in HP 15-BS series laptops) is available through several specialized engineering and repair repositories. Verified Schematic Resources Use a multimeter in continuity mode to trace