Hisense
Abnormal Operating Noise
Microwave makes loud buzzing, humming, or grinding noises during operation.
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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
Failing magnetron,Loose or damaged turntable motor,Debris in cooling fan or exhaust fan,Loose mounting hardware or cavity panels
How to Fix / Troubleshooting
Safety first: Unplug the microwave before inspecting the interior.
Steps:
- Isolate the source: Remove the glass tray and roller ring, then run the microwave with a cup of water. If the noise disappears, the issue is with the turntable components.
- Inspect turntable parts: Check the glass tray, roller ring, and coupler for cracks, warping, or debris. Clean and reseat them.
- Check for loose items: Ensure no utensils or covers are rattling inside.
If noise persists with turntable removed:
- The noise may come from the magnetron, transformer/inverter, or cooling fan. These require professional diagnosis.
- Stop using the microwave and contact a technician.
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Repair Difficulty
Medium
3/5
Required Part
Turntable Motor
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