Question about Sharp R-820B Convection/Microwave Oven

2 Answers

Metal turntable's enamel chipped, so sparks fly.

I own a Sharp R-820JS-F (,1058,1356,00.html) which is a combination microwave and convection oven. It has an enameled metal turntable that's blue and speckled like those gold-miner camping mugs and teapots. Somehow, the enamel on the edge of the turntable chipped and, now, it's the Fourth of July if I run it. Of course, I stopped running it the moment I noticed. Is there any way to repair the turntable?

Posted by on

  • HandyFolks Jan 09, 2009

    Since this is a convection oven and grill, I'm not too sure about using a glass plate. And, the part is available to order, I'm just trying to be eco-friendly and frugal by keeping my existing one in use.

    Well, we initially bougth some Rustoleum epoxy enamel spray paint, but, upon getting it home, found that it said that it wasn't to be used for high temperature applications.

    Yesterday, I picked up a can of Dutch Boy (Sherwin Williams) "High-Temp" ("withstands 850ºF") spray paint at K-Mart. It specifically says "Use on grills and stoves" and notes that it's to be used on metal. So, it'll take getting hot and the substrate is fine, but what about those mysterious microwaves? Am I asking for trouble with that? Are they going to penetrate my paint and cause fireworkds in my microwave?

    A little wandering around the 'Net has uncovered that they make so-called "engine enamel" paint. Obviously, it can get really hot and it's got "enamel" in the name. And, it comes in a wide array of colors, including "hot rod green" and "Ford blue"! Any thoughts on that?


2 Answers

  • Level 3:

    An expert who has achieved level 3 by getting 1000 points


    An expert that got 20 achievements.


    An expert that got 10 achievements.


    An expert that got 5 achievements.

  • Master
  • 1,498 Answers

Hi there HandyFolks,

The bare metal in a microwave is a problem. It needs to be insulated. I'd immediately rule out Black tape or epoxy.


  • Find a similarly sized glass tray to replace the metal one.
  • Paint over the chipped area with high temp enamel.
  • If the chipped area is small, use a small brush and dab the paint in.
  • Allow plenty of time to cure.
  • Then try a test storm.

Posted on Jan 07, 2009

  • Justin Case
    Justin Case Jan 10, 2009

    Hello again,.

    I had Engine or Bar-B-Que paint in mind when I suggested it. It seems I skipped over some key detail there. My apologies. While I'm apologizing about things not mentioned..... Forgot to specify Pyrex for the plate. Can handle high temps and differentials.

    As far as the microwaves penetrating the paint, it's supposed to. The paint is to keep the metallic portion of the plate from coming in contact with the ionized air created inside the microwave cavity. If it does it has the same effect as on it as the ionized air between a storm cloud and the ground, big spark.

    What's different is after a lightning bolt the air is de-ionized. In a microwave, the air is continuously ionized so the lightning continues.

    All the paint needs to do is keep the air from contacting the metal.

    Let me know how it goes


  • Level 3:

    An expert who has achieved level 3 by getting 1000 points


    An expert that got 10 achievements.


    An expert that got 5 achievements.

    Vice President:

    An expert whose answer got voted for 100 times.

  • Master
  • 716 Answers

Try Going To Your Local Hardware Store And Finding Enamel Repair.
It May Just Cook But I Hope It Doesn't.

Posted on Jan 07, 2009

1 Suggested Answer

  • 2 Answers

SOURCE: I have freestanding Series 8 dishwasher. Lately during the filling cycle water hammer is occurring. How can this be resolved

a 6ya expert can help you resolve that issue over the phone in a minute or two.
best thing about this new service is that you are never placed on hold and get to talk to real repairmen in the US.
the service is completely free and covers almost anything you can think of (from cars to computers, handyman, and even drones).
click here to download the app (for users in the US for now) and get all the help you need.

Posted on Jan 02, 2017

Add Your Answer

Uploading: 0%


Complete. Click "Add" to insert your video. Add



Related Questions:

1 Answer

Sharp carousel microwave convection oven keeps blowing fuse

The service manual is here:

You can get Sharp parts from Encompass here.

If it went dead almost immediately after pressing the Start pad, that's usually a shorted high-voltage capacitor.

If it went dead several seconds after pressing the Start pad, that's usually a failing high-voltage transformer.

If it goes dead or blows the breaker (or GFI) when you plug it in or open or close the door, then there's a problem with a door switch or door switch mount.
See this:

Aug 01, 2013 | Sharp R-820BK Microwave Convection Oven,...

1 Answer

Shape R-930 seems to have reset itself. No power,

Retaliate--reset it right back! haha
Most microwaves can be "reset" by unplugging for at least one hour. If that doesn't seem to fix it, you might want to contact Sharp so they can help you to get it fixed (or replaced, depending on your warranty). According to their website ( ), it doesn't look like they have a contact phone number, but here is the link to their product inquiry web form:,1878,,00.html

Good luck! :)

Aug 26, 2009 | Microwave Ovens

1 Answer

Unlock a microwave

hello jeansween ,
can you double check that number please , R-4446 ?,2310,,00.html?model_num=r&s_func_disp_id=19&x=24&y=6

heres a list of sharp microwave owner manuals .

to cancel child lock you touch timer/clock pad, the number 1 and stop/clear pad

hope thats understandable .

Jan 02, 2009 | Sharp R-308J Microwave Oven

1 Answer

Can you direct me to a place or online site where I can get an operation mamnual For a SHARP CAROUSEL Model R930AW S/N 01562 Year 1997

here's the link to download via Sharp in pdf format...,1083,5,00.html

Once there, scroll down a bit and you'll seee the download link for the R930 CS/AK/AW series

Aug 23, 2008 | Sharp Microwave Ovens

2 Answers

Sharp Carousel R 9H56 Instruction manual & Cookbook,1087,5,00.html
Here is a link for your model.

Feb 23, 2008 | Sharp R-820B Convection/Microwave Oven

1 Answer

Cooking in an old convectional microwave

Regardless of the model, the basic procedure should be the same in most Sharp convection models.

You can download several recent models here:,1083,5,00.html

Nov 22, 2007 | Sharp R-1850A Convection/Microwave Oven

Not finding what you are looking for?
Sharp R-820B Convection/Microwave Oven Logo

674 people viewed this question

Ask a Question

Usually answered in minutes!

Top Sharp Microwave Ovens Experts

William Miller
William Miller

Level 3 Expert

9047 Answers

Ed Mac

Level 3 Expert

731 Answers

Jim Thurston

Level 3 Expert

670 Answers

Are you a Sharp Microwave Oven Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides