Frigidaire PLMV168 Microwave Oven Logo
Posted on Apr 21, 2009
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Microwave doesn't heat food anymore

It worked as recently as yesterday when I heated up green beans perfectly. Tonight, I went to reheat leftovers and it won't heat up anything, not even a cup of water on any setting. I tried the express cook buttons, the timed cooking, and different powers with no change in the temperature of the food.

1 Answer

Benjamin Patri

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  • Master 3,037 Answers
  • Posted on Apr 26, 2009
Benjamin Patri
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Joined: Mar 18, 2008
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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

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