Microwave emits a burning smell or visible smoke from the interior during or after cooking.

Safety first: Stop the microwave immediately, unplug it, and keep the door closed if there is active smoke. Do not continue using the unit until inspected.

• Inspect interior: After smoke clears, open the door and check for burnt food, splatters, or grease buildup on the walls, ceiling, and floor.
• Clean thoroughly: Use a mild detergent and warm water to clean the cavity. Avoid abrasive pads that can damage the enamel.
• Check waveguide cover: Inspect the waveguide cover (usually a small mica or plastic panel on the side wall) for burns, holes, or carbon deposits. Replace if damaged.
• Inspect turntable parts: Check the glass tray and roller ring for melting or burn marks. Replace if deformed.
• Internal inspection: If the smell seems electrical or comes from behind the control panel or cabinet, unplug and have a technician inspect the magnetron, wiring harness, and control board for overheating.