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

Safety: Immediately stop the microwave and unplug it. If there is active smoke or fire, keep the door closed and call emergency services.

• Inspect cavity: After cooling, check for burned food, splatters, or packaging. Clean the interior thoroughly.
• Waveguide cover: Inspect the waveguide cover (mica or plastic panel on the side or top of the cavity) for burns, holes, or carbon tracking. Replace if damaged.
• Check for arcing: Look for scorch marks near the waveguide, rack supports, or metal trim.
• Internal inspection: A technician should inspect internal wiring, the magnetron, and the control board for signs of overheating or burning and replace any damaged components.