Question about Microwave Ovens

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All of a sudden noting works on my over the counter microwave.

There are no lights both overthe stove and inside the microwave. The exhaust fan does not work. The display is dead. Nothing works. My wife may have set the oven to cook for an hour instead of setting the timer as she intended. Could this be a fuse or is it the motherboard? how do i fine the fuses/circuit breakers inside the ove?. Is there a way to get the wiring diagram for this thing?

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  • Microwave Ovens Master
  • 9,047 Answers

It may be as simple as a blown magnetron thermostat, and a fuse may have blown, but the magnetron may have been destroyed, too.

You didn't mention your model number, so I'll have to answer generically.

There is often a "mini-manual" (tech sheet) hidden inside the unit behind the control panel or hidden on the left side behind the grille, which is very helpful when troubleshooting, testing, and locating components.

all of a sudden noting works on my over the counte - 35511a8.jpg

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

If you don't find your mini-manual, or if you want to look at it before removing the controller, you might be able to download it here (just enter your model number).
You can find links to helpful exploded view diagrams and part ordering help here.

I recommend that you bookmark that link to your favorites.We're happy to help you with free advice and we'd appreciate your thoughtful rating of our answer.

Posted on May 16, 2010

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