Question about Microwave Ovens

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Two very small sparkinging points in right rear interior case of unit. Can these be covered with some kind of material or epoxy, and is it safe?

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The sparks are from exposed metal reacting with the microwave radiation, you can put silicone rubber over these points or cover them with epoxy, as long as you cover them completely the microwave is safe to use, even if you continue to use it without repair all that will happen is that it will burn out sooner or later.

Posted on Oct 05, 2009


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What kind of paint is best for the bottom interior of a microwave (under the turntable)

The area will first have to be sanded smooth and cleaned and dried thoroughly.

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 the crack or hole.

Once that dries thoroughly, you can sand it smooth.

Then you can apply some high-temperature appliance paint, available from places like your neighborhood hardware store, Wal-Mart, Lowe's or Home Depot.

It is important to do this right away as bare metal will cause arcing. Joe

Feb 18, 2011 | Microwave Ovens


How to change a Microwave Oven lamp.

All microwaves have their lamps positioned outside the heating cavity so as not to interfere with the microwave process and to avoid arcing. Some lamps are accessable by removing a small cover on the rear of the unit. If you do not see any doors on the rear of the unit you will have to remove the metal cover.

To access your lamp you will need to remove the outer cabinet which requires removing all the screws around the back lip. With all the screws out, the cabinet should slip off the unit. It should pull up and to the front to get it off. In some cases the cabinet may stick due to food spills which have dried, holding the cover, even after all screws have been removed. Be careful but persistent and the cover will come off.

Once the outside cover is off the lamp should be visible. If not you may have to remove another dust cover to access it. At this point the lamp can be removed and replaced.

Replacement lamps should be available at Lowes Home Depot or .Be sure to replace the lamp with the exact same size/rating bulb and one which is designed to work in a microwave oven. These are specially designed lamps and therefore will cost more than a run of the mill lamp.

Installing a larger unit may cause overheating problems, melting or possibly even a fire. Reverse the procedure used to disassemble and your unit should be ready to go.

Thanks for using FixYa and for the great rating.


on Mar 29, 2010 | Microwave Ovens

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A piece of waxed paper caught fire and melted a 1/4" hole in top of microwave.

I assume you mean the interior of the oven.
Epoxy is available in white (I don't know if in both quick & regular versions however) and I suggest you trim and fill the hole so its edges are flush with the surrounding plastic. Mix the two component epoxy, use duct tape or similar and if a quick-set type of epoxy, I would put a generous blob in the middle of a length of tape, allow it to start setting up (should still be very pliable) and put the tape over the hole, pressing it firmly into it to ensure that some material flows inside around the edges to secure it. Make sure the epoxy has NO metallic content as this would worsen your problem. If done well, the new plug should be quite level to the surrounding surface.

Aug 08, 2009 | GE Spacemaker JVM1640SJ Microwave Oven

1 Answer

The interior surface is rusted and arces sometimes is there a safe effective paint or other cure for this

The area will first have to be sanded smooth and cleaned and dried thoroughly.

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 you can apply some high-temperature appliance paint, available from places like Wal-Mart, Lowe's or Builder's Square.

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

Jul 18, 2009 | Panasonic Microwave Ovens

1 Answer

Panosonic NN-S525BF Latch Spring Broken

You have to separate the door panels (as shown in the attached photo) and then you'll see the previously hidden screws you need to remove.

Or you can watch a YouTube video (not a video I made) that demonstrates how it's done.

In most cases, the spring mount on the inner door panel breaks off, and while the ideal way to fix it is to replace that whole panel, the time, cost and labor are considerable.

It's usually easier and cheaper and just as effective to use epoxy and some kind of hardware to fashion a new spring mount.

Or if there is enough material to drill a hole for the spring, do that, install the spring, then add a dab of epoxy to cover the bottom loop of the spring where it goes through the hole you drilled.

Let the epoxy dry overnight before you close the door or use the oven.

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



Jan 24, 2009 | Panasonic NN-S254BF Microwave Oven

1 Answer

Interior cardboard/foil piece fell off revealing small chamber inside oven--still safe?

This is the mica or plastic waveguide cover. It protects the waveguide and magnetron form grease and food particles.

Assuming you're going to scrap the unit, carefully clean the area around the outside of opening (watch for sharp edges) with a lightly damp soft cloth.

Then use alcohol or a hair dryer, etc. to be sure the area is dry.

Then you can use a couple of strips of clear packing tape to cover the opening and trim it with a razor blade so only about 1/4" or so extends out from the opening.

Note that I only recommend this procedure on an oven that is going to be scrapped. If the oven will see continued use, a new waveguide cover should be purchased.

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

Oct 22, 2008 | Microwave Ovens

2 Answers

Replace light in overrange GE microwave

Advantum 120 over range microwave - with burned out interior bulb: Remove top fron grill cover -- held byu 2-3 screws on top. Remove sheetmetal plate that lies parallel to top of unit, just to the right of the square plastic porting on the far left of the unit. The sheet metal plating is about 12" wide and 8" deep and is shaped like 2 overlapping rectangles. It is held in place by 1-2 screws. (I don't recall if you needed to remove other plastic grid on right front -- I did, but I was still searching for the bulb). The bulb is located about 5" from the left side and about 2" in from the front, covered by a small sheetmetal box. THe bulb looks like the little halogen bulbs used in low-voltage outdoor lights - but is slightly larger - DO NOT REPLACE WITH THAT KIND OF BULB). Remove the one screw holding the box, unplug the bulb and find a replacement. Can't tell you where to get a bulb -- that's what I'm doing next. Good luck.

Jul 25, 2008 | Microwave Ovens

1 Answer

Electrical arc discharging from the top, inside oven, causing burned spot in top of cooking enclosure

You may be able to repair that with a high quality epoxy.
Just make sure you read the package to be sure the eopxy contains no metalic substances.
I think you could succesfully repair it.

Mar 22, 2008 | Microwave Ovens

2 Answers

Damage to samll rectangular material inside microwave

Well, I have just spoken with a reputable, but now retired, appliance repairman, he advised that this small rectangular cover on the upper interior of the microwave is a MICA Insulator Shield - of which one may be able to purchase just the shield. At this time, I do not know if any appliance parts places have this MICA Insulator Shield available for purchase. But apparently you can purchase a pice just slightly larger and cut the right size for replacement.

If the old one is burnt at all, or has a hole or crack in it - Do Not Use the Microwave.... as it will begin to arc and likely through out the breaker and/or fry the magnatron.

Mar 05, 2008 | Danby DMW1153 Microwave Oven

1 Answer

Hole in plastic on inside of door

check the conductivity of the plastic with an ohmmeter by placing the probes an inch apart on the plastic surface. If the resistance is large or infinity, the plastic probably performs no role in stopping the microwave radiation. If so, any epoxy probably can be used to close the hole safely. Make sure you don't use too much and if possible place tape over the repair and orient the microwave so the epoxy presses against the tape while drying to prevent it from oozing into any door hinge/close mechanism. Otherwise, a piece of microwave door glass from a broken unit can ge glued over the hole and should stop the radiation. You can check for leakage with test units but be very carefuly anyway.

Nov 30, 2007 | GE JVM1650 1000 Watts Microwave Oven

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