Question about Sharp R-425LS Microwave Oven
often this is due to grease or food particles stuck somewhere in the
cavity of the oven or stuck on or behind the waveguide cover.
It may also be in the area of the turntable support, coupler, or motor.
The waveguide cover (also called a spatter shield) 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 paint or metal is charred or damaged beyond simple cleaning, the area will first have to be sanded smooth and cleaned and dried thoroughly.
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.
It provides critical protection for the magnetron.
It is part number PCOVPA311WRE0 and you can order that from the Sears Parts Direct Web site or Encompass here.
We're happy to help you with free advice and we'd appreciate your thoughtful rating of our answer.
Posted on Jan 02, 2011
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Posted on Jan 02, 2017
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