Kenmore Main Control Board or Power Supply Failure

Refrigerator not cooling at all, both fresh food and freezer sections warm, interior lights work but compressor and fans are off.

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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 main control board, Loose power cord or outlet issue, Open thermal fuse on control board, Faulty power relay on PCB

How to Fix / Troubleshooting

Safety first: Verify the outlet with another appliance before assuming a refrigerator fault. Unplug the refrigerator before opening any panels.

Steps:

  • 1. Confirm power: Check that the outlet has 120 VAC and that the breaker is not tripped.
  • 2. Listen for operation: After plugging in, listen for any fans or compressor starting. If completely silent, suspect the control board or power circuit.
  • 3. Inspect main control board: Remove the rear access cover and open the control board housing. Look for burnt components, darkened areas, or bulging capacitors.
  • 4. Check connectors: Ensure all harnesses are firmly seated and that the line and neutral connections are tight.
  • 5. Test incoming voltage: With extreme caution and only if trained, verify that line voltage reaches the control board. If voltage is present but the board does not power any loads, replace the board.
  • 6. Replace main control board: Install a new OEM board, transferring any jumpers or programming plugs as required.
  • 7. If unsure: Because live voltage testing is hazardous, consider hiring a professional technician.
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Repair Difficulty

Professional Required 5/5

Required Part

Main Control Board
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