Microwave interior light turns on, but the turntable does not rotate during cooking.

Safety: Unplug the microwave before inspecting the turntable mechanism.

User-level checks:

• Remove the glass tray and clean it along with the turntable support ring and rollers.
• Inspect the turntable coupler (plastic piece that fits over the motor shaft) for cracks or wear.
• Reinstall the tray correctly, ensuring it sits properly on the coupler and support ring.

Technician-level:

• Access the underside of the cavity to reach the turntable motor.
• Test the motor for continuity and replace if open or seized.
• Inspect wiring and connectors to the motor for damage.

Do not force the turntable by hand if it feels jammed; identify and remove the obstruction first.