Bertazzoni
Turntable Drive or Cavity Mechanical Noise
Microwave runs but makes loud grinding, scraping, or rattling noises from inside the cavity.
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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
Worn or damaged turntable motor, Broken turntable coupler, Debris in roller ring track, Loose cavity components or fan shroud
How to Fix / Troubleshooting
Safety first: Unplug the microwave before touching internal parts.
- Step 1 – Isolate the noise: Remove the glass tray and roller ring, then run a short test. If the noise disappears, the issue is with the turntable system.
- Step 2 – Clean and inspect: Clean the cavity floor and roller track. Inspect the roller ring wheels and the coupler for cracks or flat spots.
- Step 3 – Replace worn parts: Replace the roller ring or coupler if damaged. If noise persists with the tray removed, the turntable motor or internal fan may be failing.
- Step 4 – Motor/fan replacement: Access the bottom panel to replace the turntable motor, or the rear/side panels to service the fan, following Bertazzoni service procedures.
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Repair Difficulty
Medium
3/5
Required Part
Turntable Roller Ring
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