Bdl51 Lad711p Rev 30 Schematic - Work

It looks like you're referencing a specific piece of hardware: BDL51 LAD711P REV 30 — likely a power supply or main board from an LCD TV (possibly a Samsung or LG chassis, given the naming pattern).

CPU: AMD-based architecture (integrated or discrete variants). Graphics: Integrated AMD Radeon or Discrete GPU options. bdl51 lad711p rev 30 schematic work

Verified BIOS: Search for "HP 255 G5 LA-D711P BIOS dump" if you suspect a firmware issue. It looks like you're referencing a specific piece

• Fix using schematic: Temporarily disconnect the OVP feedback resistor divider (from output to LAD711P pin 3) to test, but never permanently remove protection.

Crucial Signal: Check the ADP_ID pin. If the charger identification signal is missing or incorrect, the board will not initiate charging or power-on. Standby Voltages (LDO & Always-On) The standby controller is typically the RT8243A. Check for LDO3 (3.3V) on Pin 15 and LDO5 (5V) on Pin 14. Fix using schematic : Temporarily disconnect the OVP

3.3 Clicking Relays / Buzzing Sound

• Primary cause: Short in secondary rectifier diode (Schottky) or a partial short in the main transformer.
• Schematic work: Locate the secondary diodes (D801, D802). Lift one leg and test with a multimeter in diode mode. Replace if shorted.