Microwave turntable does not rotate, but heating and timer work

Safety first: Unplug the microwave before accessing the underside or internal components.

Step-by-step checks:

• 1. Check tray and roller ring: Remove the glass tray and roller ring. Clean both and the cavity floor. Inspect the roller ring for flat spots or broken wheels; replace if damaged.
• 2. Inspect coupler: Remove the plastic coupler and check for cracks or wear. Replace if it no longer grips the motor shaft properly.
• 3. Test motor operation: With the tray removed, run the microwave briefly (with a cup of water) and look through the glass at the coupler shaft. If it does not turn, suspect the motor.
• 4. Replace motor: Access the motor from the bottom of the unit, disconnect wiring, remove mounting screws, and install a new Daewoo-compatible turntable motor.