Customer Questions and Answers for Sub Pcb Assembly by Lg

This sub PCB assembly is an electronic control board used in select LG appliances. It manages signals and low-voltage power for a specific feature or module, helping restore normal operation when the original board becomes unresponsive or fails.

• Provides low-voltage control for the designated function or user interface
• Communicates with the main control to execute settings and cycles
• Helps resolve symptoms such as unresponsive controls, blank/flickering display, intermittent operation, or related error codes
• Supports reliable operation of the affected subsystem after replacement

• Disconnect power at the breaker; shut off gas/water if applicable
• Use ESD protection and handle the board by the edges
• Photograph wire locations; transfer connectors one at a time to avoid miswiring
• Follow the service sheet for any required option-code entry, reset, or diagnostic check after installation