LG
No Power to Control Board
Oven light works but control panel is completely dead (no display, no response).
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Safety Warning
This repair may involve working with high voltage components or water connections. Always unplug the appliance before removing any panels.
If you are not confident in your ability to perform this repair safely, we strongly recommend contacting a professional technician.
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Possible Causes
Blown internal fuse on control board, Loose harness to control, Failed control board power supply, Faulty power filter board
How to Fix / Troubleshooting
Safety first: Disconnect power at the breaker before opening the control area.
- Confirm supply: Verify the range has full line voltage at the terminal block.
- Access control board: Remove the rear panel behind the control console. Locate any inline fuses or board-mounted fuses and test for continuity. Replace only with the exact type and rating.
- Check connectors: Ensure the main power harness to the control board is fully seated.
- Replace control board: If fuses and wiring are good but the board remains dead, replace the main control board.
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Repair Difficulty
Hard
4/5
Required Part
Main Oven Control Board (ERC/PCB)
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