Microwave makes rattling or scraping noises when the turntable rotates.

Safety: No internal access required for basic checks.

• Remove and clean: Take out the glass tray and roller ring. Clean the cavity floor and the groove where the ring sits.
• Inspect roller ring: Check for flat spots, broken wheels, or warping. Replace if damaged.
• Check tray: Inspect the glass tray for chips or cracks that could cause instability.
• Coupler check: Ensure the plastic coupler is firmly seated on the motor shaft and not cracked.
• Test: Reassemble and run with a cup of water to confirm quiet operation.