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HomeRepair HelpE-Wave Microwave RepairE-Wave Microwave is sparking or arcing Repair
E-Wave Microwave is sparking or arcing
An E-Wave microwave sparking or arcing needs attention before you use it again. If the microwave is sparking inside the oven cavity, inspect the waveguide cover first. A damaged, burned, or loose waveguide cover can cause microwave arcing and should be replaced. If the sparks occur in the cabinet area, especially with smoke or a burning smell, a failed door switch may be shorting. Check the primary, secondary, and monitor switches for burn marks or other damage, then test them with a multimeter. Arcing behind the waveguide cover can also point to a damaged magnetron, while a visibly burned high-voltage diode can cause sparks and pops. Inspect interior shelf supports for burned spots, and check the cavity walls for chipped paint that exposes metal. Sand damaged areas lightly and apply microwave-safe touch-up paint. Repairs involving the magnetron or high-voltage diode, and any repair requiring the outer cabinet to be removed, are hazardous. The high-voltage capacitor can store a lethal charge even after the microwave is unplugged, so it must be properly discharged. Use a qualified technician if you are not familiar with capacitor discharge procedures. Enter your E-Wave model number to find the exact replacement part for your microwave.
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.
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02 - E-Wave Microwave Door Switch
If the microwave is sparking or arcing in the cabinet area, and not in the oven cavity, you will likely see smoke or there will be a burning smell. One of the appliance's door switches could have shorted and is causing the sparking or arcing. You should inspect each door switch for burn marks or damage and test the components with a multimeter to determine if any the door switches are malfunctioning.
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03 - E-Wave Microwave Magnetron
If the microwave is sparking or arcing behind the waveguide cover in the oven cavity, you will likely see smoke or there will be a burning smell. The appliance's magnetron is one of the components that could be damaged and causing the sparking or arcing. Inspect the magnetron for burn marks or damage and replace if necessary.
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04 - E-Wave Microwave Diode
If the microwave is sparking or arcing in the cabinet area, and not in the oven cavity, you will likely see smoke or there will be a burning smell. The appliance's diode is one of the components that could be damaged and causing the sparking or arcing. When the diode fails, it is often visibly burned out. Inspect the diode and if the diode is burned out, replace it. If inspecting the diode proves inconclusive, test it with a multimeter that uses a 9-volt battery or put a 9-volt battery in series with the diode. When the leads are reversed, the diode should only have continuity in one direction..
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05 - E-Wave Microwave Shelf Support
Some microwave ovens will have cooking shelf supports on the interior walls. Inspect the shelf supports for any burnt spots or damage. If there are any burnt or damaged spots, replace with new supports as needed.
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06 - E-Wave Microwave Touch-Up Paint
The paint on the interior of the microwave might be chipped. If the paint is chipped, the interior metal will be exposed, causing the microwave to spark or arc. Check the interior of the microwave for any spots where the paint has chipped away. If there are any damaged spots, gently sand the compromised area and touch them up with microwave oven interior paint.
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Frequently Asked Questions
Why is my E-Wave microwave sparking inside?
What causes an E-Wave microwave to spark in the cabinet and smell burnt?
Is a microwave that is sparking or arcing dangerous to use?
Can I test the E-Wave microwave diode or magnetron myself?
How do I find the correct E-Wave microwave waveguide cover or other replacement part?
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