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Re: Microwave don't work
You didnt mention if the oven worked or not. Its not blowing the fuse?? Ok it could be as simple as the Diode or capacitor but dont try to touch the capacitor terminals as it holds a nice charge.. Turn on the oven for a bit with a cup of water inside and let it run for a few minutes. If you start to see smoke pull the plug right away!!!!! If you dont let the water boil(about 2 to 3 minutes thyen unplug and carefully fell around for a HOT part, But dont touch any electrical connections! If theres something drawing to much current it will get hot. Ive had bad capacitors bad and causes the transformer to get too hot. as well as bad magnatrons cause the transformer to get to hot. I would recomend that you take this unit in to be diagnoised as there are alot of voltage in this oven as I ststed before and it is dangerous for a handyperson to be fiddling with it. Good Luck
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This can be caused by grease etc. inside
the oven and on the wave guide which is the paper like thing in the oven. If
you can remove it look for burnt areas which may can be scraped off or you may
need to replace it. An appliance parts store usually has the material you can
cut to fit you own.
It looks like the metal part inside the oven is exposed to the high frequency rf waves. this may sound strange but try coating the metal part with fresh paint. remember no metal inside the oven will stand the waves created inside the oven the spark u see is the waves hitting the exposed metal part inside the oven
If it is burning and arcing at the antenna, it is probably arcing in the wave guide area. Probably will have to replace unit. I have had some success by removing the antenna, sanding and repainting the burnt areas of the cavity and sanding off any burnt marks on the antenna. Need to look at top of mag to see if also arcing there too.
I would first suggest that you look inside the cooking cavity to see if your wavegudie cover is burned or carbonized.
If so, it will need to be replaced. You can order one via Tritronics at http://www.wehaveparts.com
The job of the waveguide cover is to protect the waveguide (opening) and the magnetron from buildup of food particles and grease.
When the grease and food particles build up on and behind the cover, they will carbonize and arc - and maybe even flame up!
The solution is to clean it and keep it clean - but if it's too dirty or is burned, it must be replaced.
Sometimes it's necessary to remove the cover to clean both sides of it, and to clean the edges of the opening it covers.
It is sometimes held in place with a small plastic rivet (or screw) and once that is removed, the cover will slide over a little then drop down.
Be VERY careful not to get cut on the potentially sharp edges of the opening, and do not spray anything into the opening.
Apply an alcohol-based cleaner (such as the purple kind) and /or gentle scouring powder to a cloth or paper towel and carefully wipe it out, then when it's dry, reinstall the cover and the rivet.
I suggest to my customers that they NEVER use any ammonia-based cleaner (like the blue stuff) on a microwave, since the ammonia will crack and distort polycarbonate plastics.
Once you remove and / or clean the cover and clean the opening of the waveguide, if it still won't heat and/or still has the smell, you may have a bad magnetron or high-voltage transformer.
Feel free to post back if you still have trouble.
Did he plug it back into the first spot?
Assuming so and assuming it still doesn't work, then I would say that you have a blown fuse. That can be caused by a loose fuse holder, misalignment or damage to the door, etc.
It may also have an open or tripped thermostat.
We have text files covering critical safety, disassembly, and door switches. You can find them via a search on Yahoo.com (not Google) for this:
microwave circuit repair
At this point the oven needs to be checked out a bit.
With these text files, and proper caution, it can be done pretty easily.