La-9413p Rev 1.0 Schematic Instant

This will take you to the power section (usually page 14).

The RT8223 needs EN1 and EN2 (pins 3 & 4). The schematic shows these come from the EC via S5_ENABLE . If missing, the EC is not booting. la-9413p rev 1.0 schematic

Introduction In the world of laptop motherboard repair, the silkscreen code on a PCB is the first clue to unlocking its secrets. One such critical code is LA-9413P Rev 1.0 . This board is widely known as the primary motherboard for several models of Compaq and HP laptops, including the Compaq Presario CQ45, CQ58, HP Pavilion G6, and HP 1000 series. This will take you to the power section (usually page 14)

Pin 8 ( VREG3 ) should output 3.3V. Pin 17 ( VREG5 ) should output 5V. If these are missing, the IC is dead. If missing, the EC is not booting

For a technician, finding the correct schematic diagram is not just helpful—it is absolutely essential. Without it, diagnosing a short circuit, missing voltage rail, or a corrupted BIOS is akin to finding a needle in a haystack.

Look for chip labeled PU5 or PU6 (often an RT8223). Find its VIN (pin 16) – should be 19V.

Always ensure you download the official Rev 1.0 file (and the accompanying boardview) from a reputable repair forum. With the schematic in hand, patience, and a steady soldering iron, even the most daunting motherboard repair becomes a solvable puzzle.