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 HelpIkea Microwave RepairIkea Microwave producing a burning smell Repair
Ikea Microwave producing a burning smell
An Ikea microwave smells like burning, stop using it until you identify the source. The most likely cause is a damaged or loose waveguide cover arcing inside the oven cavity. Replace the cover if it is burned, cracked, or will not stay in place. If the cavity is clean and the waveguide cover looks good, inspect the power supply board for burn marks or a shorted component. A failing high-voltage capacitor or capacitor can overheat and create a microwave burning smell, while a defective thermostat may also show heat damage. Food debris and grease left on the cavity walls can continue cooking and cause a burning food smell, so clean the interior and wipe up spills after each use. Repairs involving the high-voltage capacitor require extreme caution. The capacitor stores a lethal charge even after the microwave is unplugged and must be properly discharged before opening the outer cabinet or handling interior components. If you are not familiar with capacitor discharge procedures, have a qualified technician inspect the microwave. Enter your Ikea microwave model number to find the exact replacement waveguide cover, power supply board, capacitor, or thermostat for your specific appliance.
01 - Ikea 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 - Ikea 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 - Ikea 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 - Ikea 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 - Ikea 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 IKEA microwave smell like burning?
Can I keep using my IKEA microwave if it has a burning smell?
How do I fix an IKEA microwave that is sparking or burning around the waveguide cover?
Could the high-voltage capacitor, power supply board, or thermostat cause a burning smell?
How do I find the correct IKEA microwave waveguide cover, capacitor, or thermostat?
Shop by Ikea Microwave Parts
Shop by Popular Ikea 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