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HomeRepair HelpGoldstar Microwave RepairGoldstar Microwave producing a burning smell Repair
Goldstar Microwave producing a burning smell
If your Goldstar 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 or burn as the microwave runs. Check the cover for scorch marks, cracks, or signs it will not stay in place, and replace it if needed. If the microwave cavity is clean and the waveguide cover is intact, inspect the power supply board for burn marks or a shorted component. A failing high-voltage capacitor or capacitor can also overheat and create a burning smell, as can a damaged thermostat. Finally, check the interior cavity for spilled food or grease. Food debris can continue cooking and produce a microwave burning smell, burning plastic smell, or burnt odor, so clean the cavity thoroughly. 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 components, carries serious shock risk. The high-voltage capacitor can store a lethal charge even after the microwave is unplugged and must be properly discharged before interior work. If you are not familiar with capacitor discharge procedures, contact a qualified technician. Enter your Goldstar microwave model number to find the exact replacement part for your appliance.
01 - Goldstar 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 - Goldstar 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 - Goldstar 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 - Goldstar 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 - Goldstar 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 Goldstar microwave smell like burning?
Can a dirty microwave cavity cause a burning smell?
Could the waveguide cover be causing my microwave to spark or smell burnt?
How can I test a Goldstar microwave that smells like burning?
How do I find the correct Goldstar microwave waveguide cover or other replacement part?
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