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

This is the appliance's primary electronic control board. It regulates power and coordinates all core functions, helping restore normal operation when the unit won't power up, won't start cycles, or the controls act erratically.

• Directs power to key components and monitors inputs to run cycles correctly
• Interprets user commands and sensor feedback to manage functions
• Controls timing, display/indicators, and protective interlocks
• Typical symptoms of failure: dead display or no power, won't start, intermittent shutdowns, error codes, or unresponsive buttons

• Disconnect power at the breaker or unplug the appliance before servicing
• Use ESD protection; handle the board by the edges only
• Photograph wiring; move connectors one at a time and avoid bending pins
• Reinstall in the original orientation; secure ground/standoff screws, restore power, and run a test.