Microwave emits a burning smell or visible smoke during or after operation.

Fire Safety: Stop the microwave immediately, unplug it, and open windows to ventilate. Do not continue using the unit until the cause is identified.

• Inspect cavity: Look for burnt food, grease buildup, or charred spots on the interior surfaces. Clean thoroughly with a non-abrasive cleaner.
• Waveguide cover: Check the mica or plastic waveguide cover on the side wall for burn marks or holes. Replace if damaged.
• Internal wiring: With the cabinet removed, inspect wiring harnesses for melted insulation or burn marks. Replace any damaged wiring and secure away from hot components.
• Component overheating: If the smell is electrical and comes from the magnetron or transformer area, discontinue use and have a professional inspect and replace the failing component.