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HomeRepair HelpAdmiral Microwave RepairAdmiral Microwave producing a burning smell Repair
Admiral Microwave producing a burning smell
When your Admiral 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 produce a burning smell from the microwave. Next, inspect the power supply board for burn marks or a shorted component. A defective high-voltage capacitor or capacitor can overheat and create a burning smell, while a damaged thermostat may also show heat or burn damage. Finally, clean the interior cavity thoroughly because food debris and splatters can continue cooking and cause a microwave burning smell. Cover food and wipe spills after each use. Replacing a waveguide cover, power supply board, thermostat, or any high-voltage component may require opening the outer cabinet. The high-voltage capacitor can store a lethal charge even after the microwave is unplugged, so it must be properly discharged before interior work. If you are not familiar with capacitor discharge procedures, have a qualified technician handle these repairs. Enter your Admiral microwave model number to find the exact replacement waveguide cover, power supply board, high-voltage capacitor, capacitor, or thermostat for your specific appliance.
01 - Admiral 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 - Admiral 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 - Admiral 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 - Admiral 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 - Admiral 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 Admiral microwave smell like burning?
Can a damaged waveguide cover cause microwave sparking and a burning smell?
Is a burning smell from my microwave caused by the high-voltage capacitor or power supply board?
What should I do if my microwave smells like burning plastic, rubber, or wires?
How do I find the correct Admiral microwave waveguide cover or other replacement part?
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