Microwave light and fan come on when START is pressed, but the turntable does not rotate.

Safety first: Unplug the microwave before working underneath or inside.

• Check the glass tray: Remove the glass turntable and the plastic roller ring. Clean both thoroughly and remove any food debris from the cavity floor.
• Inspect coupler: The plastic coupler that fits into the motor shaft can crack or strip. Remove it and inspect for damage. Replace if worn.
• Test motor: With the tray and ring removed, run the microwave briefly (with a cup of water inside) and look through the glass to see if the coupler turns. If it does not, the motor may be faulty.
• Access motor: On many Ambiano models, the turntable motor is accessible from the bottom after removing a metal cover plate. Test the motor for continuity and replace with an Ambiano-compatible turntable motor if open or seized.