Question about Emerson MW8168B Microwave Oven

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The metal plate on the right had side of oven has a hole burned in it

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That's the waveguide cover (also called a spatter shield) is usually about the size of a playing card and sometimes held in place by a plastic rivet.

If your waveguide cover is burned or damaged, it will need to be replaced.

It provides critical protection for the magnetron.


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.

You can find links to helpful exploded view diagrams and part ordering help here.

I recommend that you bookmark that link to your favorites.

We're happy to help you with free advice and we'd appreciate your thoughtful rating of our answer.

Posted on Oct 26, 2012

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SOURCE: My 900W microwave oven (model

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Posted on May 20, 2011

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You should replace the waveguide cover, the plate you refer to. They are fairly cheap and easy to replace.
www.espares.co.uk or www.cpc.co.uk most appliance repair services can get them.

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We have a JE1860CB001 built-in microwave that has on several occasions sparked very brightly from the square plate on the inside right of the cavity covering the opening to the microwave tube. It has...


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.

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Some units have a silica plate covering the waveguide opening. If it get burn spots on it, it'll do that. Remove the plate and try the unit. If it's OK, go to your MW repair shop and order a new plate.

Remember... always cover your food...

Geno

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