Microwave runs but makes a grinding or scraping noise from the turntable area.

Safety: Unplug before cleaning inside the cavity.

Steps:

• 1. Remove and clean components: Take out the glass tray and roller ring. Clean the ring, tray, and cavity floor thoroughly.
• 2. Inspect roller ring: Look for flat spots on wheels or cracks in the ring. Replace if worn or damaged.
• 3. Check coupler and floor: Ensure the coupler is firmly seated and not cracked. Check that the cavity floor is not dented upward into the ring path; gently straighten if slightly bent.
• 4. Test: Reassemble and run with a light load to confirm the noise is gone.