Customer Questions and Answers for Main Control Board (Pcb Assembly) by Lg

This is the appliance's main electronic control board (PCB assembly). It manages power distribution and operating logic for key functions. Replacing a failed board can restore normal operation when the unit is dead, unresponsive, or behaving erratically. What it does

• Routes power and coordinates major loads (motors, heaters, fans, valves) based on sensor feedback and user settings
• Controls timing and modes for normal operation
• Monitors safety circuits and error conditions
• Common symptoms of a failed board: no power/won't start, blank or dead display, won't complete cycles, intermittent shutdown or clicking, erratic operation, recurring error codes

What's included

• One main control board (PCB) assembly

Install notes

• Disconnect power before servicing; allow capacitors to discharge fully
• Use ESD protection and handle the board by the edges only
• Photograph connectors; move any jumpers, covers, or brackets from the old board to the new one as required
• Inspect wiring and connected components for shorts, heat damage, or moisture before powering up the new board