Question about LG Microwave Ovens
Some users have been using aluminium foil in the oven, could it have caused damage to the magnetron
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Posted on Jan 02, 2017
SOURCE: microwave will not heat food
Found this under Maytag instead of LG, but will be happy to help.
Generally, the most common causes of a failure to heat are:
- bad door switches or door switch mounts
- loose connection at the magnetron
- problem or loose connection on the control unit circuit board
- bad magnetron or other high voltage part
If you or a friend decide to look into it, we have critical safety information, info on door switch diagnosis and replacement, and disassembly information at our site, and our link is at our listing here on FixYa: http://tinyurl.com/yzjozk
Magnetron diagnosis is here: http://gallawa.com/microtech/mag_test.html
We're happy to help and we appreciate your thoughtful rating of our answer.
Posted on Dec 08, 2007
I had the same problem with my Sharp OTR microwave/convection oven. I had 2 service reps out to look at it (Sears and Lowes) they both said it was the magnatron and would cost about $500.oo to repair it. I called Waverly's Appliance in Paris, TN and it turned out to be a diode. Total cost of repair was $35.00 including service call.
Posted on Jan 09, 2009
1) How is the cavity damaged? Is it just peeling paint, or is it rust? If it's rust then the microwave could be dangerous.
2) The antenna cap usually has a small hole in the centre, but if there are any other holes in it the magnetron itself could be damaged, and holes caused by the magnetrin arcing.
Posted on Mar 25, 2009
HI, you will need to replace the heating device. This device is called the Magnetron and, it will cost you about $133.00. This is a repairable issue but, you will need to call for service. I do not recommend installing this device if you are not familiar with handling this type of tech.
Posted on Jun 01, 2009
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