One of the front shelf supports seems to have "melted" after a couple of days smelling a burning scent coming from the microwave. Now the piece is totally off the side of the microwave, and looks like it was in a fire.
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Re: shelf support burned off
The shelf supports will need to be replaced. It's best to replace them all.
You can find helpful exploded view diagrams and order parts by entering your model number here: http://tinyurl.com/gv383
Before you install the new supports, you should clean the cavity squeaky clean in those areas where they mount.
If any paint is chipped or charred, it should be sanded bare, then fresh high-temperature appliance paint should be added. That can be had from home improvement stores, or Wal-Mart, etc.
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is the burning smell just when you use the convection oven or when you use the microwave , reason I ask is that if its only coming from the convection oven then chances are you have something melted on the heat elements , this can be cleaned off with a dry brillo pad
I understand that you are receiving a burning rubber smell from your Frigidaire microwave. I also see that your appliance will run for a couple of seconds, and then you hear a weird noise, followed by a burning rubber smell. I suggest contacting your local authorized technician, especially when dealing with your microwave. They will be able to diagnose your appliance and determine what is causing that sound as well as the burning rubber smell. Hope this is helpful.
proceed according. God bless youIf you see arcing or sparking inside a microwave, turn unit off immediately. Arcing can be caused by having something metal in the oven cavity touching a side, an oven shelf is touching the side of the cavity, an oven shelf support has broken, microwave waveguide, or bad magnetron. If your microwave has a shelf in it, and you do not use it, keep it out. If one of the shelf supports breaks or comes out, the microwave will arc where the support was. You will have to sand the spot down, paint with appliance paint and re-install support. If the shelf shifts on the support and touches the side it will arc. Your magnetron waveguide will either come out of the top, or side of the oven cavity. Some will have a stirrer in it(mostly top waveguides) with a panel over, or just a cardboard type cover over it. Over time, the stirrer cover can become warped from the heat which will expose the stirrer's metal shaft which will then cause sparking. These covers and stirrers come in a kit and can be replaced from inside the oven cavity. Your cover over a side waveguide is coated with a substance on it, and overtime this coating can come off from the heat and moisture in the microwave. These waveguide covers are very easy to replace from inside the oven cavity. Touch up any paint that may have chipped or come off because of the arcing. If your waveguide cover and/or stirrer are all OK, then the spark is coming from your magnetron. The antenna on your magnetrom has overheated and burned, sending the microwaves out at the wrong angle. If you catch this microwave oven repair early enough, you can usually get by with just replacing the magnetron. If the arcing has caused servere damage inside the waveguide, you will need a new microwave. Waveguides are not replaceable and most you can barely see into them, let alone sand and re-paint. In this case of microwave oven repair, when you remove the magnetron, you will see the burned antenna, or your magnetron will fail the test below.
More common then you think, i have gone through a couple microwaves in the last ten years, they both failed very similar to what you describe. One popped the breaker one day, reset the breaker and it worked again but had an odd smell to it. I took it apart and couldn't find anything burnt or melted so i tossed it and got a new one, i didn't want a microwave burning the house down! I would suggest unless your really tied to that microwave that you just replace it for safety sake. Four years or forty years old don't matter anymore, i had one microwave, LG brand, that died two months after the warranty expired and it would cost more to repair it then replace the thing!
my kenmore microwave model # 66222, doesn't let the steam out, its ventilated so I know thats not the problem, smells like its burning then shuts off and doesn't come back on until its cooled off, this happened when cooking a Baked Potato, also when I cook something for over 5 minutes
First try cleaning the burned mark off. Dip a scrubber in lemon juice and sprinkle salt on it; this is also great for burned coffee pots. The smell can be gotten rid of this way: Boil lemon peel in water, then put the water in a spray bottle. Not only will it make your microwave smell fresh but the lemon oil will make it easier to clean. If it still smells of burning rubber, take the back off and inspect the wiring. IF you see burned wiring, please do yourself a favor and replace the microwave!
Microwaves work by making the molecules in food get "excited"-they move more-meaning, if there IS rubber burning, then there will be minute molecules of rubber in your food, which is BAD for your immune system. If it's just burned chocolate, though, it is harmless unless you are allergic.
A burning smell along with a different sound (growl) USUALLY indicates a breakdown in the High Voltage Side. This is not a direct short (short circuit) or the line fuse would have blown shutting everything down. The High Voltage Side is made up of-- The Secondary ,or High Voltage Side of The High Voltage Transformer, A High Voltage Diode, A High Voltage Capacitor, and The Magnetron. If The High Voltage Transformer is the problem it will smell like a florescent light ballast burning, and will smell each time you turn on the MW. A HV Diode burns and opens, thus no more smell. A HV Capacitor usually does not burn nor does the Magnetron. There is no Cheap-Fix unless you can see that the HV Diode is burned into and you can get to it to replace. CAUTION: Always unplug from power before attempting to repair. NOTE: If you replace a Diode make sure it goes back in the same direction it came out. Yes there is a front and back.
best way to remove the smell is to get an activated charcoal cooker hood filter (cheap and available at any hardware store) and leave it scrunched up in the microwave for a couple of days with the door shut.(also a bowl of fresh cat litter works if it is the "fuller's earth" type without extra super-scented-power-globules etc..)
If you are competent enough to take the cover off (make sure you know what you are doing or get a repair man to do it) then clean all round the extractor fan blades and where the air is ducted - there may be some soot that smells in this area.
If there are no obvious holes in the interior as a result of the fire then if the machine seems to work normally there is probably no problem. the only way i know to remove this type of stain is with a (plastic scotchbrite type) scourer with some neat bleach (wear gloves) or some "cif/jif" type scouring cream. if a bit of effort with one of these doesn't do the job then you are probably best to live with the stains - make sure you clean all the cleaning products off properly before cooking in the machine again.
If none of this works then try microwaving some sugar until it burns (watch it and stop it the moment it catches fire if it does). Sometimes this can remove burning smells even if this sounds very stupid it can work. last resort anyway.
Hope this helps :)