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

This main control board is the appliance's central electronics that manages cycles, timing and sensor inputs so the unit operates correctly. Replace a failed board to restore control and normal electronic function. What it does:

• Interprets user commands and runs selected cycles
• Controls motors, valves, heaters, and sensors through relay/output signals
• Processes sensor feedback to regulate timing and operation
• Can cause no-start, unresponsive controls, error codes, or erratic behavior when faulty

• Disconnect power before starting; risk of shock or further damage if energized
• Handle by the edges and avoid static discharge—use an anti-static wrist strap if available
• Compare part numbers and connector layout to the old board before installing
• After install, restore power and run a diagnostic or short cycle to verify operation