Thermador Turntable Drive Failure

Microwave turntable does not rotate, but heating still occurs.

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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

Failed turntable motor,Worn or cracked turntable coupler,Dirty or damaged roller ring,Turntable off-track or overloaded

How to Fix / Troubleshooting

Safety first: Unplug the microwave before accessing the underside.

  • Step 1 – Check tray and roller ring: Remove the glass tray and roller ring. Clean both thoroughly and inspect for cracks or flat spots on the rollers.
  • Step 2 – Inspect coupler: Check the plastic drive coupler in the center of the cavity for cracks or wear. Ensure it is firmly seated on the motor shaft.
  • Step 3 – Test motor (qualified persons): Remove the bottom panel to access the turntable motor. Test for continuity with a multimeter. Replace the motor if open or seized.
  • Step 4 – Reassemble and test: Reinstall the motor, coupler, roller ring, and tray. Test with a light load to confirm smooth rotation.

Note: Avoid placing oversized or very heavy dishes that can strain the turntable system.

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Repair Difficulty

Medium 3/5

Required Part

Turntable Motor
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