Question about Whirlpool 1.6 Cu. Ft. Over-the-Range Microwave

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Turns on and rotates, does not heat the food. noisy hum

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Hi


Thanks for using FixYa. If it’s a loud hum/buzz sound then 90% it’s usually a bad magnetron and other times it’s a bad high voltage diode. However, from what you have described it seems to be the magnetron. Please do rate the solution if the issue is resolved or post a comment for further assistance.


Thanks
Rylee

Posted on Jun 02, 2010

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Posted on Jan 02, 2017

MicrowaveSvc
  • 9047 Answers

SOURCE: microwave turns on and rotates

With these symptoms,you probably have a shorted high voltage rectifier diode or a bad magnetron.

Here are some links you or someone you know can use (in order given) for test help, but read the safety warnings first:


http://www.microtechfactoryservice.com/diode.html
http://www.microtechfactoryservice.com/mag_test.html
http://www.microtechfactoryservice.com/xformer.html


You can usually find helpful exploded view diagrams and order parts by entering your full model number here.

There
should also be a "mini-manual" hidden inside the unit behind the
control panel or hidden on the left side behind the grille, which is
very helpful when troubleshooting & testing.

We\'re happy to help you with free advice and we\'d appreciate your thoughtful rating of our answer.

Posted on Sep 09, 2008

bestdarngood
  • 3037 Answers

SOURCE: Microwave will not heat food and is noisy

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 29, 2009

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