Unlock the Right Part
for Your Repair
Find the exact part you need
Enter your model number to see parts that fit your machine.
Price Match Guarantee
In-stock parts ship the same day
365-Day Return Policy
Price Match GuaranteeChoose Product
Identify Problem
03
Find Solutions
HomeRepair HelpE-Wave Microwave RepairE-Wave Microwave producing a burning smell Repair
E-Wave Microwave producing a burning smell
When your E-Wave microwave smells like burning, stop using it until you identify the source. A damaged or loose waveguide cover is the most likely cause because it can arc or burn during operation. If the cover is intact and the oven cavity is clean, inspect the power supply board for burn marks or a shorted component. Next, check the high-voltage capacitor and capacitor for visible damage or overheating. A defective thermostat can also create a microwave burning smell, while food debris or splattered grease left inside the cavity may continue cooking and produce a burning smell from the microwave. Clean the cavity thoroughly and always cover food to prevent future buildup. Replacing a waveguide cover, power supply board, thermostat, or other part may correct the problem, but any repair that requires removing the outer cabinet involves lethal high voltage. 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, have a qualified technician handle repairs involving the high-voltage capacitor, high-voltage diode, high-voltage transformer, or power supply. Enter your E-Wave microwave model number to find the exact replacement part for your specific appliance.
01 - E-Wave 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.
Enter model number to search for the required part specific to your product
Top Solution
02 - E-Wave 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.
Top Solution
03 - E-Wave 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 - E-Wave 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 - E-Wave 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 E-Wave microwave smell like burning?
Can I keep using my E-Wave microwave if it smells like burning or is sparking?
Could the power supply board, capacitor, or thermostat cause a burning smell?
How do I safely inspect or test an E-Wave microwave that smells burnt?
How do I find the correct E-Wave waveguide cover or other replacement part?
Shop by Popular E-Wave Microwave Models
Our Story
Family-owned and operated since 1912, Burke America Parts Group is the longest-running genuine appliance, HVAC, and outdoor power equipment parts solution in North America. At Repair Clinic, we're proud to be an international brand trusted by the pros as well as the DIY community.
About Repair Clinic
© 2026 RepairClinic.com