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Microwave oven coming on but not heating

I have a problem with my LG Microwave oven its coming on, bur it does not warm foods. The light inside is showing and the plate is rotating

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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

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9 times out of ten it is the magnatron that has gone bad, that is the device that creates the microwaves for heating the food. Check inside the cabinet for fuses and if none found or blown then it is the magnatron. These are available widespread but most cost about as much as a new oven, so do a google search on your make and model of microwave and search for a magnatron for that unit. This will bring up parts suppliers and their prices and you can decide if it is worth fixing or replacing

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Normally when u cook food in microwave the fod is cooked by microwaves, which means the heat is generated with in food. The temperature inside is never too hot and all the heat produced is absorbed with in the food.

On the other hand when the grill is switched on, a separate heatting element gets switched on. You can see this red hot element on the top side of inside of microwave. the heat from this element gets transferred to food through air circulation. But partof heat also gets transferred to the walls of microwave oven. This is the reason the wall feel hot during use of grill.

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I have not solved my problem,I have decided to buy a new microwave rather than pay for this amount of money on a telephone advice when you have said on your site that it is free.I will also spend further amount of money, to call an electrician after your advice,so I will be better of buying a new one.

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The Microwave Magnetron or power circuit break down . You need to replacement the parts .
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