Question about Sharp R-820B Convection/Microwave Oven

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My ge microwave is rusting under the turntable.

My expensive GE microwave is rusting under the turntable. GE seems to think it has never happened before although the same thing happened to my sister's new microwave. In the past I have not had this problem with other microwaves I have owned. The microwave is built in a brick wall.

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  • Sharp Master
  • 9,047 Answers

This is due to either liquid spills or steam buildup or both.

In rare cases, you may have bad air flow (blocked vent or clogged filter) or a weak internal cooling fan or hood vent exhaust fan.

It's recommended to wipe off any moisture that accumulates inside, and leaving the door open a while after cooking may help, too.

And I always recommend that you use the vent fan whenever you're cooking on the stove top to keep heat, steam, and grease out of the controls and door panels, etc.

You need to clean the area, sand it shiny, then clean it squeaky again.

Then you can get high temperature appliance paint in spray or brush-on form from local appliance part stores or places like Wal-Mart and Lowe's.

I would suggest you let it dry overnight with the door open before using the oven.

You can find helpful exploded view diagrams and order parts (such as charcoal filters, etc.) by entering your full model number from the tag on the oven here.

You shouldn't need to remove the oven from the wall to take care of this problem.

If so, the installation instructions are very handy, and it's best to have two people since the microwave can be heavy and awkward.

You can download GE owner's manuals and installation instructions here.

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

Posted on Jul 25, 2009

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