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Model 721.80032700 Number buttons on microwave stopped working. What is the problem?

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3 Suggested Answers

6ya6ya
  • 2 Answers

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Posted on Jan 02, 2017

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MicrowaveSvc
  • 9086 Answers

SOURCE: Microwave stopped working for no reason

A microwave can be dead for many reasons.

It may be the fuse, which is usually located behind the grille or on the floor of the oven behind the control panel or between the door switches.

If the fuse is good, it may be an open thermostat or thermal cutout (TCO) / thermal fuse on or near the magnetron or on top of the cavity / body of the oven.

If it went dead almost immediately after pressing the Start pad, that's usually a shorted high-voltage capacitor.

If it went dead a few seconds after pressing the Start pad, that's usually a failing high-voltage transformer.

If it goes dead or blows the breaker (or GFI) when you plug it in or open or close the door, then there's a problem with a door switch or door switch mount.

At our site, we have a video available 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.

There should also be 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.

If you don't find your tech sheet, you can download it here.

If the cavity thermostat needs to be checked or replaced you'll need to pull the oven from the wall.

You can download Whirlpool owner's manuals and installation instructions here.

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

Posted on Nov 23, 2008

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MicrowaveSvc
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SOURCE: microwave model number: 721.80593402.

The first thing I would suggest is a hard reset. Unplug the unit for a minute or so. Then plug it back in, set the clock and try again.

If that doesn't work, leave it unplugged for about 5 minutes and try again.

If it still doesn't work, then your membrane keypad has failed.

If the keypad is available separately and
you (or someone you know) might want to replace it yourself, I have uploaded a handy guide with pictures showing you what's typically involved.

If this model's keypad is not available separately, you would need to order the control panel frame, which comes with a new keypad.

In this case, you simply move your circuit board into the new frame. That is a simple do-it-yourself job.

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.

Then you unplug the keypad (as per the photo below) and move the circuit board into your frame.

34374fd.jpg

Some connectors on the relays may have a lock:

positivelock.jpg


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

Posted on Feb 17, 2011

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Call Amana customer service. Microwave ovens should be able to handle the high humidity you are talking about.
Here's the contact information:
Have your complete model number ready. You can find your model number and serial number on the label located on the upper or lower
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Chances are your keypad has failed.

You can usually find helpful exploded view diagrams and order parts by entering your full model number here: http://tinyurl.com/gv383

If yours is not found there, please reply back with your brand and model.

If you don;t prefer to repair it yourself we can help.

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