Testing inductors (coils) for short circuits to ground, which is a common cause of power-on failure. AliExpress Technical Resources
: Common issues for this board series include the device failing to hold a charge or failing to power on entirely, which may indicate a "dead" motherboard requiring component-level repair. Finding the Full Schematic PDF Schematic diagrams for Compal boards like the la-d401p schematic
The LA-D401P is a switch-mode power supply (SMPS) board designed by LG. Its primary function is to convert AC mains voltage into the various DC voltages required by the TV's mainboard and the OLED panel itself. Testing inductors (coils) for short circuits to ground,