: Inspect the 19V "VIN" line. A common failure point in this model involves shorted resistors (10Ω or 20Ω) that prevent voltage from passing through the charging circuit. 3.3V/5V Always-On Rails
Technicians use the LA-E802P Boardview along with specialized software like OpenBoardView Boardview Archive to trace signals. Telegram Messenger Common Issue Boardview Focus Area Key Components No Power (Dead) DC-In / VIN Section DC Jack, BQ25725A IC, VIN resistors (10/20 ohm) No Display GFX / LCD Connector LVDS connector pins, GPU power rail No Charging Battery Charging Circuit Charging IC pins, MOSFETs near battery connector BIOS / EC Section BIOS chip (SPI Flash), KB9022 Super I/O Practical Diagnostic Steps VIN Rail Check Dkl50 La-e802p Boardview
"No power" solutions often involve checking these specific IC signals or BIOS corruption. Where to Find Boardview & Schematics : Inspect the 19V "VIN" line