LG
Display Backlight or UI Power Failure
Display is blank or very dim, but the wine cooler still runs and cools.
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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
Failed LED backlight in display, Loose UI ribbon cable, Partial failure of UI board, Low-voltage supply issue on main PCB
How to Fix / Troubleshooting
Safety: Unplug the unit before removing the control panel.
Steps:
- 1. Check for response: Press buttons and see if the unit beeps or changes operation. If it responds, the issue is likely with the display only.
- 2. Access UI board: Remove the front control panel trim to expose the display and UI board.
- 3. Reseat connectors: Disconnect and reconnect the ribbon cable and any connectors to the display.
- 4. Inspect for damage: Look for burnt LEDs or damaged traces on the UI board.
- 5. Replace UI board: If the display remains blank or dim, replace the user interface/display board.
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Repair Difficulty
Medium
3/5
Required Part
User Interface Board
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