Question about Microwave Ovens

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My sharp r-1381 is shooting sparks out the top of it any do it your self fixes?

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  • Anonymous Jan 19, 2009

    shooting

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  • Microwave Ovens Master
  • 8,820 Answers

That model has a stirrer motor and blade in the ceiling above the waveguide cover.

Arcing can occur if there is grease or food particles on the front or back of the stirrer cover, on the blade or around the motor shaft.

You would need to remove the stirrer cover and inspect the parts, then use a damp cloth to wipe the parts clean.

We have a partial service manual for this model and have uploaded it to our site here to help you. You may also need to refer to this base manual.

You will need the free Acrobat Reader to view or print them in case you don't have it already.

The best place to order Sharp parts is Tritronics.

We're happy to help you with free advice and we'd appreciate your thoughtful rating of our answer.

Posted on Oct 20, 2008

  • William Miller
    William Miller Oct 20, 2008

    CORRECTION

    Sorry, but the first service manual link above should have been here.

    The base manual link is correct.

    We're happy to help you with free advice and we'd appreciate your thoughtful rating of our answer.

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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.

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