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Microwave not heating, but everything working fine

Hi, I have a Samsung MO1450WA Microwave that all of a sudden stopped working.  The instrument panel works as does the light and turntable.  There seems to be a louder hum when it's running and a slight over heating electronic smell.
It's the over the range version which was more expensive than the countertop version and I guess I would like to repair it myself rather than just throw it out, it's approximately five years old.  Does this sound like something I can repair myself or should I just get a new one?  Where do I start? Thanks, JB

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  • Microwave Ovens Master
  • 9,030 Answers

It's probably a shorted high voltage rectifier diode or magnetron.

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

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

You can order Samsung parts here.

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

Posted on Nov 08, 2008

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