La-e801p Rev 2.0 Schematic ^hot^ Jun 2026

The 19V rail enters through a DC jack and must clear two isolation MOSFETs. If the laptop has , locate the charging IC (typically an Intersil/Renesas ISL or Texas Instruments BQ series controller). Check the gate voltage of the input MOSFETs. If the controller detects a short circuit downstream, it keeps the gate voltage low, isolating the motherboard to prevent fire hazards. The RAM Power IC (PUM1)

The power adapter’s LED blinks or shuts off entirely when plugged into the laptop. The laptop shows no signs of life. la-e801p rev 2.0 schematic