Strong burning smell, smoke, or unusual odor from the microwave during or after use.

Safety first: If you see smoke or smell burning plastic, stop the microwave immediately, unplug it, and keep the door closed until any smoke dissipates.

• Inspect interior: Once cool, open the door and check for burned food or splatter. Clean thoroughly with a mild detergent.
• Check waveguide cover: Look for discoloration or burn marks on the waveguide cover. Replace if damaged.
• Clean vents and filters: Remove and clean grease filters on over-the-range models. Vacuum dust from vents.
• Test with water: Run the microwave with a cup of water for 1–2 minutes. If a burning smell persists without any food, internal components may be overheating and require professional inspection.