Lg EBR78402302 Main Power Control Pcb (Electronic Control Board) OEM Part

Product Details

Genuine Lg part.

Cross Reference Information

Part Number EBR78402302 replaces AP5977730.

Description

This Main Power Control PCB is the primary electronic control board that manages power delivery and overall appliance functions, restoring control and allowing the appliance to run normal cycles. It replaces a faulty main control to recover responsive operation. What it does:

• Regulates power to motors, valves, sensors, and user controls
• Interprets user input and runs cycle logic for proper operation
• Helps resolve symptoms like unresponsive controls, intermittent power, or failure to start when traced to the main board
• Works with other electronic modules and wiring harnesses to coordinate appliance functions

What's included:

• One Main Power Control PCB (assembly)

Install notes:

• Recommended: disconnect power (unplug or breaker) before service to avoid shock or damage
• Handle the board by edges and avoid static discharge; use basic ESD precautions
• Verify connectors, wiring harness routing, and mounting before powering the appliance
• If symptoms persist after replacement, check related components (fuses, door switches, wiring)