For "No Display" issues, ensure the CPU core voltage ( ) and graphic core voltage ( ) are stable.
Verify that 19V is present at the input and passing through the first and second MOSFETs (often labeled PQ4 or similar). bdl51 lad711p rev 30 schematic work
The is a motherboard manufactured by Compal, commonly found in HP 15-ba series laptops and HP 255 G5 models. Repairing this board requires an understanding of its power sequence, common component failures, and the specific circuit architecture defined in its technical schematic. Technical Overview For "No Display" issues, ensure the CPU core
This component near the charging circuit (PL1, PL2) is a common failure point and may appear burned. Repair Methodology Without a Full Schematic For "No Display" issues