Microwave makes loud grinding or scraping noises when the turntable rotates.

Steps:

• 1. Remove tray and ring: Take out the glass tray and roller ring. Clean the cavity floor thoroughly.
• 2. Inspect components: Check the roller ring wheels for flat spots or cracks. Inspect the glass tray for chips or warping around the center hub.
• 3. Check coupler: Ensure the coupler sits firmly on the motor shaft and is not rubbing against the cavity floor.
• 4. Test without load: Run the microwave briefly (with a cup of water placed directly on the cavity floor, if allowed by the manual) to see if the noise persists without the tray and ring. If noise disappears, replace the damaged mechanical parts.

Replace the roller ring or glass tray with genuine Morphy Richards parts to avoid instability.