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HomeRepair HelpGE Microwave RepairGE Microwave producing a burning smell Repair
GE Microwave producing a burning smell
When your GE microwave smells like burning, stop using it until you identify the source. The most likely cause is a damaged or loose waveguide cover, which can arc and create a burning smell inside the cavity. If the cover is burned, cracked, or will not stay in place, replace it. Next, inspect the power supply board for burn marks or a shorted component, especially after cleaning all food debris from the oven cavity. A failing high-voltage capacitor or capacitor can overheat and cause a burning smell, followed by a damaged thermostat. Food splatter and debris left on the interior can also continue cooking and make the microwave smell burnt, so clean the cavity and cover food during use. Before replacing a waveguide cover or cleaning the cavity, unplug the microwave. Any repair that requires opening the outer cabinet, including work on the power supply board, high-voltage capacitor, high-voltage diode, or other high-voltage parts, is hazardous because the capacitor can store a lethal charge even when unplugged. It must be properly discharged first, and this work may require a qualified technician. Enter your GE microwave model number to find the exact replacement part for your appliance.
01 - GE Microwave Waveguide Cover
The waveguide cover might be damaged and arcing or burning. If this is the case or if the cover will not stay in place, replace it with a new one.
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02 - GE Microwave Power Supply Board
If you've confirmed the oven cavity has been cleaned of all food debris and the waveguide cover is in good condition, a defective power supply board could be one of the components producing a burning smell. You should inspect the board for any burn marks or a shorted component and replace if necessary.
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03 - GE Microwave High Voltage Capacitor
The high voltage capacitor works with the high voltage diode to convert the output of the transformer to DC voltage and to double the output voltage. A defective capacitor may overheat and produce a burning smell. Inspect the capacitor for visible damage or burn marks and replace if necessary.
Highly Likely
04 - GE Microwave Capacitor
The capacitor works with the high voltage diode to convert the output of the transformer to DC voltage and to double the output voltage. A defective capacitor may overheat and produce a burning smell. Inspect the capacitor for visible damage or burn marks and replace if necessary.
Highly Likely
05 - GE Microwave Thermostat
If you've confirmed the oven cavity has been cleaned of all food debris and the waveguide cover is in good condition, a defective thermostat could be one of the components producing a burning smell. You should inspect the component for any burn marks or damage and replace if necessary.
Highly Likely
06 - Interior Cavity not Clean
Food that is left on the interior of the microwave can continue to cook each time the microwave is used, resulting in a burning smell. Always cover food when cooking to avoid splatter and wipe up any spills after use.
Highly Likely
Frequently Asked Questions
Why does my GE microwave smell like burning?
Can a damaged waveguide cover cause microwave sparking and a burning smell?
Is a burning smell from a microwave caused by the high-voltage capacitor or power supply board?
Should I keep using my GE microwave if it smells like burning plastic or burning wires?
How do I find the correct GE microwave waveguide cover or other replacement part?
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