Microwave emits a burning smell or plastic smell during or after cooking.

Safety: If you smell strong burning or see smoke, stop the microwave immediately and unplug it.

Steps:

• 1. Inspect interior: After cooling, check for burned food, melted plastic containers, or damage to the turntable support.
• 2. Clean thoroughly: Remove all residue with a mild cleaner. Pay attention to the ceiling and around the waveguide cover.
• 3. Test briefly: Run the microwave with a cup of water for 30–60 seconds. If the burning smell returns without visible cause, internal components may be overheating.

Resolution: Replace any melted plastic parts (roller ring, coupler, tray support). If the smell persists, have a technician inspect the magnetron, transformer, and wiring for overheating and replace as needed.