She traced the power rail backward from a blown capacitor. The schematic wasn’t in any database—not BoardView, not the private repair forums, not even her dark-web sources. Someone had erased it deliberately.
The laptop acts completely dead. No LEDs light up when the charger is connected.
The laboratory power supply immediately hits its current limit, or the charging adapter's LED blinks and goes out.
The LA-C781P schematic also includes various compensation components, such as capacitors and resistors, which ensure stability and prevent oscillations.
Navigate to the step-down section of the document to pinpoint the configuration of the 3V/5V controller.
Supports 6th Gen Intel Core processors (SkyLake-U).