Question about 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.
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 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.
You can find helpful exploded view diagrams and order parts by entering your full model number here.
We're happy to help you with free advice and we'd appreciate your thoughtful rating of our answer.
Posted on Oct 07, 2008
Tips for a great answer:
Nov 08, 2013 | Sharp R-1460 Microwave Oven
Jan 20, 2011 | Emerson 025806092806 Microwave Oven
Dec 28, 2010 | Emerson MW8775W Microwave Oven
Oct 10, 2010 | Whirlpool MT1110SKQ 1100 Watts Microwave...
Jun 21, 2010 | Thermador MBBS Microwave Oven
Feb 25, 2010 | Emerson MW8107WA Microwave Oven
Sep 07, 2009 | Goldstar MV-1526 Microwave Oven
May 28, 2009 | GE Spacemaker JVM1640SJ Microwave Oven
Sep 22, 2008 | Frigidaire FMV156DC Microwave Oven
May 21, 2008 | Sharp R-520LK Microwave Oven
137 people viewed this question
Usually answered in minutes!