Question about Frigidaire PLMV169DC Microwave Oven

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Popping and shooting sparks

This is a new microwave. Since it was installed, whenever we turn it on, it pops really loudly, and shoots blue sparks immediately upon hitting the start button, then it works fine. I have had it looked at by a repairman, who stated that he could not find any signs of sparking wiring, and the microwave never popped or sparked at all while he was there. Three days later when I used it again, it popped and shot sparks. Whats up with this?

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  • dehlia Feb 29, 2008

    AFter reading your reply, I decided to pay more attention when I was using the microwave, and sure enough the next time I used it, it popped really really bad, and I noticed that I had food cooking on the stove that was steaming pretty good, it had moisture on the microwave, so we may be on to something. I plan on watching it for a while more before I call the manufacturer back. I have until June before the warranty runs out. My question is shouldnt an over the range microwave be designed to handle any mositure that comes from cooking on the stove?

  • jcmoore Apr 09, 2008

    I'm having the exact same problem. Brand new and has sparked from day one (now about a month old). No food or moisture. Sometimes I can open the door to stop, then start it up again and it's fine. It's a zapping noise and light, that happens like clockwork, about every second. It reminds me of a mosquito zapper.

  • Lance99999 May 08, 2009

    Frigidaire PLMV169DC Stainless Steel 1000...

    I had a problem with sparks after condinsation was caught in the microwave. Unit will not heat after this incident.

    Any recommendations?


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I had the same sparking problem with a Bosch 5050. Replaced the mica cover after cleaning the cavity, but did not solve the problem,
Any other ideas?

Posted on Jan 29, 2013

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Hey I have had the same problem! What's wrong with this microwave!

Posted on Nov 18, 2008

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My microwave was "unrepairable" by the local authorized Electrolux service center. Frigidaire is in the process of replacing it. So, if yours sparks, don't assume it's food and moisture.

Posted on Jun 29, 2008

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I have a brand new Frigidaire Microwave and it sparks. No food or moisture... The repair people are coming out in the morning to fix the dish washer as well. All new appliances and two of them are broke

Posted on May 22, 2008

  • papabeardan Sep 16, 2010

    we have the exact same problem. Our unit is 3 years old and has done this for quite some time. It definitely only occurs when we have a steaming hot pot on the stove below. Kinda scary.


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Hi There!
Check behind the "Wave Guide Cover" on the inside cavity. There may be moisture or food residue behind it. Should be a cover that is plastic or Mica. Really strange that it's sparking being new. Also check that you use plates without gold or silver trimmings (Crockery or porcelein). This will also cause sparking. Remember that microwaves will always go to the first organic source in its path. The wave guide cover, if soiled, is very close to the tip of the Magnetron and will therefor result in arcing. Good Luck, JUS004

Posted on Feb 26, 2008

  • Justin Smith Feb 29, 2008

    Sure they can handle a lot of steam. It,s the fatty substances in the food that goes up with the steam and clings to the insides.

    Did you find the little cover inside the microwave? It's a cover rectangular in shape and approx. 7cm in length. normally white or cream in colour. Either screws on or clips into position. Behind that you may find the culprit. Also check for burn marks on the door or inside the cavity. Let me know when you find it and problem solved. JUS004


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