Question about Microwave Ovens
I bought a Sharp Model R-403 KKT, Serial Number 59333, microwave oven somewhere around April of 2007. About 2 months ago as I was warming a covered plate, I heard a loud cracking sound from the microwave oven. When I turned to look the covered part next to the light was on fire. I immediately unplugged the unit and stopped using it. Have there been any other reports of such things happening? Since I no longer have the original carton and receipt I cannot return it to Wal-Mart where I bought it. What are the possibilities that Sharp will replace this unit?
Quite often this is due to grease or food particles 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 or Lowe's.
If your waveguide cover is burned, it will need to be replaced.
You can order Sharp parts from Tritronics at http://www.wehaveparts.com
If you need further assistance, please feel free to contact me directly through the links at our site: http://tinyurl.com/yzjozk
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Posted on Dec 31, 2007
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Posted on Jan 02, 2017
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