Microwave makes a rattling or grinding noise when the turntable rotates.

Safety: Unplug the microwave before cleaning inside.

Steps:

• Remove the glass tray and roller ring. Clean the cavity floor thoroughly, especially the circular track where the rollers move.
• Inspect the roller ring wheels for flat spots, cracks, or embedded debris. Replace the roller ring if damaged.
• Check the glass tray for chips or cracks that could cause uneven rotation.
• Inspect the turntable coupler for wear or damage and replace if necessary.
• Reassemble and test. If grinding persists, the turntable motor may have worn gears and should be replaced.