Question about Microwave Ovens
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Posted on Jan 02, 2017
1) How is the cavity damaged? Is it just peeling paint, or is it rust? If it's rust then the microwave could be dangerous.
2) The antenna cap usually has a small hole in the centre, but if there are any other holes in it the magnetron itself could be damaged, and holes caused by the magnetrin arcing.
Posted on Mar 25, 2009
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 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 metal of the oven wall is burned or chipped, 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 the cavity metal of the oven is cracked or split, you can use a small amount of steel-based epoxy such as JB-WELD to patch the crack or hole.
Once that dries thoroughly, you can sand it very smooth, then apply paint.
If your waveguide cover is burned, it will need to be replaced.
It provides critical protection for the magnetron.
We're happy to help you with free advice and we'd appreciate your thoughtful rating of our answer.
Posted on May 28, 2010
Tips for a great answer:
Jun 21, 2011 | Samsung SMH9187ST Microwave Oven
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Jan 29, 2011 | GE Spacemaker JVM1640SJ Microwave Oven
If you were to log on to the
manufacturer's web site, I think you will be pleasantly surprised as
usually one is able to download, by model number, Customer
Instruction Manuals, list
of Dealers for spare part supplies as required.
The information is normally free of
I hope this helps.
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Jan 07, 2009 | Sharp R-820B Convection/Microwave Oven
It's actually a stirrer. Its purpose is to scatter the microwaves to ensure even cooking, similar to the way a turntable does in other models. Having a stirrer instead of a turntable allows for a bigger dish.
The sparking is usually caused by deposits or grease or food debiris which heat, reheat and arc.
If the oven is used very long without the cover, that debris and grease can get onto the magnetron and ruin it.
You can find helpful exploded view diagrams and order parts by entering your model number here: http://tinyurl.com/gv383
Aug 30, 2007 | Jenn-Air JMV8208AAS Microwave Oven
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