Question about GE Microwave Ovens
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.
In this model, it is a larger stirrer cover type made of thicker plastic in the ceiling of the oven.
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 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 important protection for the magnetron.
While you have the cover off, look for grease buildup or charring on the metal and the stirrer (an antenna or blade-like device).
You can usually find helpful exploded view diagrams and order parts by entering your full model number here.
After checking this, please let us know if you still have trouble.
We're happy to help you with free advice and we'd appreciate your thoughtful rating of our answer.
Posted on Sep 06, 2008
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Posted on Jan 02, 2017
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