Lg EBR78931702 Pcb Assembly, System (Main Control Board) OEM Part

Product Details

Genuine Lg part.

Cross Reference Information

Part Number EBR78931702 replaces AP5977778, 4119181, PS11710917.

Description

This is the system PCB assembly — the main control board that manages appliance functions and user-interface operations. Replacing a faulty system PCB restores control and communication between sensors, motors, and the display. What it does:

• Controls core appliance cycles, timing, and logic for normal operation
• Manages user inputs and the display/LED indicators
• Processes sensor and switch signals to run motors, valves, and heaters
• Common symptom when failing: appliance won't power on, has a blank or unresponsive display, or won't start/complete cycles
• May cause error codes or erratic operation if communication or power regulation fails

What's included:

• One system PCB assembly

Install notes:

• Disconnect power to the appliance before beginning any repair
• Handle the PCB by its edges and avoid touching components; use anti-static precautions if available
• Verify connector orientation and seating before powering on; replace only with the correct board for your model