Danby
Intermittent Power or Overheat Protection Trip
Microwave runs for a few seconds then shuts off and may restart or require pressing START again.
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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
Overheating magnetron or transformer, Failing door switch losing contact, Faulty thermal cutoff, Loose power relay on control board
How to Fix / Troubleshooting
Safety first: Unplug the microwave before inspection.
- Ventilation: Ensure adequate clearance around the microwave and that vents are not blocked. Clean any grease filters on over-the-range models.
- Test with light load: Heat a cup of water and observe if the unit shuts off at the same time each run.
- Door test: Gently press on the door while it runs. If touching the door causes it to stop, a door switch or latch is likely faulty.
- Next step: Intermittent shutoff often indicates failing thermal or high-voltage components. Because of shock risk, have a technician diagnose and replace the faulty parts.
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Repair Difficulty
Hard
4/5
Required Part
Thermal Cutoff (Thermostat)
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