Microwave intermittently stops heating mid-cycle but timer continues to count down.
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.
Possible Causes
How to Fix / Troubleshooting
Safety first: Unplug the microwave before inspection.
Ventilation and cooling:
- Ensure the microwave has proper clearance on all sides and is not enclosed tightly without airflow.
- Clean all vents thoroughly to remove dust and grease.
- During operation, listen for the cooling fan; it should run whenever the magnetron is on.
Usage adjustments:
- Avoid back-to-back long cooking cycles at maximum power; allow a few minutes between cycles for cooling.
If the unit still stops heating intermittently, the magnetron or its thermal cutout is likely failing. This requires internal access and high-voltage work; contact a technician.
Repair Difficulty
Required Part
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