The is a motherboard manufactured by Compal, specifically used in HP Envy 15 (such as the 15-AE series) laptops.
Here are three common scenarios where the schematic is indispensable for repairing this board. la-c503p schematic
If the LA-C503P shows no life (no lights, no fan spin): The is a motherboard manufactured by Compal, specifically
The Embedded Controller (KBC) is the brain of the power sequence. On the LA-C503P, this is frequently an ENE or Nuvoton chip. The schematic will show the "Power Sequence Tree." la-c503p schematic