Question about Dacor DMT2420 1200 Watts Microwave Oven

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Dacor Microwave our microwave shoots sparks and sounds like there is sparks shhoing in the oven. the wave guide has a hole in it now where the sparks look like they burned a hole

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  • Vickery Apr 29, 2008

    Waveguide cover is charred. I tried to examine the waveguide itself with a magnifying glass, and the best I can tell, there appear to be 5 or 6 pin-sized holes in the metal guide itself adjacent to where the charring occured on the waveguide cover.



    Are these holes something that can be repaired, or is the microwave useless? Or, should I get a new $5 waveguide cover and see how long it works?



    Thanks in advance,
    vickerymarine@yahoo.com

  • Anonymous Feb 12, 2009

    That same thing happened and sparks flew...I read on epinions that one person replaced the guard and it worked for a while and then sparked and burned again...another person had a repairman say that it coulsn't be fixed and the microwave was useless. A lot of reviewers say that Dacor does not stand behind their product, so I don't know who to call

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  • 8,820 Answers

Quite often this is due to grease or food particles stuck to the inside of the oven or stuck on or behind the waveguide cover.

The waveguide cover is usually about the size of a playing card and often held in place by a plastic rivet.

It can be fragile, and the metal edges of the oven behind it can be sharp, so be careful!

The cover and the metal behind it should be cleaned with a mild, non-ammonia cleaner.

If the cavity metal of the oven is chipped or charred, it will have to be sanded smooth and clean.

Then you can apply some high-temperature appliance paint, available from places like Wal-Mart, Lowe's or Builder's Square.

If your waveguide cover is burned, it will need to be replaced.

The part would be much cheaper if you get the Sharp version (these ovens are made by Sharp) instead of the Dacor branded part.

The model DMT2420 is essentially the same as model R440D / R540D.

The Sharp part number is PCOVPB085MRP0 (zero on the end) and you can order Sharp parts from Tritronics at http://www.wehaveparts.com

We're happy to help and we appreciate your thoughtful rating of our answer.

Posted on Mar 18, 2008

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