Question about Whirlpool GT4185SK Microwave Oven

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Microwave seems to be working ok,but not heating food My micro wave is operating with the exception of the following: it is loud. it is not heating/cooking the food there is a metallic order when it is running.The model #GT4185SKB Serial #2505842 Manufactured 06/2002

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  • Anonymous May 15, 2009

    I have the same issue, microwave powers up ok but will not heat food.

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1 Answer

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  • Whirlpool Master
  • 9,047 Answers

Chances are you have a shorted high voltage rectifier diode or a bad magnetron, but it may be a bad high voltage transformer.

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

At our site, we have a video showing how to remove a typical over the range control panel assembly in under 5 minutes.

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

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.gallawa.com/microtech/diode.html (if it is NOT shorted, it's probably fine)
http://www.gallawa.com/microtech/mag_test.html
http://www.gallawa.com/microtech/xformer.html

If you'd rather have a pro take a look, I would recommend that you contact Whirlpool customer service to find your nearest Whirlpool-authorized service center.

Whirlpool customer service is here and you can also enter your model number on that page to download your owner's manual, installation instructions, etc..

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

Posted on Oct 27, 2008

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