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

Safety first: Unplug the microwave before cleaning or inspecting internal moving parts.

• Remove and clean: Take out the glass tray and roller ring. Clean the cavity floor thoroughly to remove crumbs or debris.
• Inspect roller ring: Check the turntable support ring for flat spots, cracks, or missing wheels. Replace if damaged.
• Check glass tray: Ensure the tray is not chipped or warped and that it sits flat on the roller ring.
• Inspect coupler: Verify the turntable coupler is not cracked and is properly seated on the motor shaft.