GE
Start Circuit or Door Interlock Failure
Microwave display is on but unit will not start when pressing Start; no relay click, no fan, no light change.
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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
Faulty Start button on keypad, Failed door switch not signaling closed, Defective main control board relay drive, Broken door latch not engaging switches
How to Fix / Troubleshooting
Safety: Unplug the microwave before inspecting door components.
- Confirm settings: Ensure a cook time and power level are set and the door is fully closed.
- Door test: Open and close the door firmly. If the interior light does not change state when opening/closing, a door switch may be faulty.
- Keypad test: Try other keys. If multiple keys fail or respond intermittently, the keypad may be defective.
- Door switch replacement (advanced): A technician can test the primary, secondary, and monitor door switches and replace any that fail continuity tests.
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Repair Difficulty
Hard
4/5
Required Part
Door Switch Assembly
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