Question about KitchenAid KHMS155LSS 1000 Watts Microwave Oven

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Microwave stopped working...

Several times before my microwave quit working, the fan would turn on when I opened the door. Now, when I try to cook something, I punch in the time and push start...it makes a click and nothing happens but the time starts counting down. The light goes on inside and it looks like it is working but there is no sound that anything could possibly be heating up in there. Any suggestions?

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Sounds like the magnetron has failed. This is the component that produces the microwaves that heats the food.

The cost of the magnetron is about 95% of the cost of a microwave oven. Most people don't, for this reason, replace the magnetron, they replace the whole oven which is probably what you will end up doing.

There is a possibility that the circuit that provides power to the magnetron is faulty and you need to take it apart, find the proper electrical leads and test them with a volt meter. To do this you have to remove it from its mounting and take it apart. It is a fairly lengthy process however.


Benjamin

Posted on Apr 26, 2009

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If the inside light, fan and turntable come on when you try to cook, but it does not heat, this is probably a bad primary interlock (top door switch) or possibly that switch's mount is bad.

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