Question about Sharp R-520LK 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.
The metal behind it should be cleaned with a mild, non-ammonia cleaner.
If the metal is chipped or charred, 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 or damaged, it will need to be replaced. It provides important protection for the magnetron.
You can order Sharp parts from Encompass here or you can call them toll-free at 866-779-5835.
We're happy to help you with free advice and we'd appreciate your thoughtful rating of our answer.
Posted on Jul 19, 2009
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Posted on Jan 02, 2017
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