Microwave shows E8; turntable does not rotate, or rotation is jerky and noisy.

Safety first: Unplug the microwave before handling internal parts.

Step-by-step:

• Check glass tray and roller ring: Remove the glass tray and clean it. Clean the roller ring and cavity floor. Ensure no food debris is jamming the rollers.
• Inspect coupler: Check the plastic turntable coupler that fits over the motor shaft. Replace if cracked or stripped.
• Test without load: With the tray removed, run the microwave briefly (with a cup of water in the cavity). Look through the window to see if the coupler turns. If not, the motor may be faulty.
• Replace turntable motor (technician): Access the motor from the bottom of the unit (unplugged). Remove the bottom cover, disconnect the motor wires, and replace the turntable motor with a compatible Clatronic part.

Warning: Avoid touching any other internal components while the bottom cover is removed.