Question about Kenmore 61689 Microwave Oven

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Nothing works and no display

It seems like there is no power and our first thought was to check the circuit breaker and it was tripped but we reset and still nothing. This did happen once before and it was something with the sensor after cooking with in the sensor mode--which we were doing. That time after a some hours it just came back up and was working. Do any of you know about this happening?

Thanks Carol

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  • Carol Russo Apr 23, 2008

    FYI after 12 hrs it is still dead and the circuit is fine. We'll try your other suggestions and try to resolve our issue. Unfortunately the warranty on the magnetron was up last October.



    Thanks again

    Carol

  • Carol Russo Apr 24, 2008

    We had someone come out and check it. The fuse was blown and when he reconnected a testing fuse and I reset the circuit breaker it was fine....until we tried to microwave a cup of water. When we hit the start button it started for a few seconds and then blew the circuit breaker again. At that point trying to get to the transformer and capacitor for testing seemed to be a major undertaking and the microwave needed to be taken down from the wall which needed two people.

    All of your previous suggestions were very helpful and I'm sure it is one of them. My concerns lies with the cost of the parts, the installation vs a new microwave. The two above-mentioned parts costs are about $130. and $100. My only other thought is to call Sears in for a repair and let them handle it and give me my options.

    We have had this microwave less then 6 years.



    Any thoughts or suggestions on replacement vs repair would be greatly appreciated.



    Thanks again,

    Carol

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  • 8,820 Answers

A microwave can be dead for many reasons.

If it goes dead for a while during or after cooking then comes back on, the magnetron is probably overheating and causing the magnetron thermostat to open. Then when it cools, it closes the circuit and allows power through again.

If it's intermittent or random, it may be a bad connection, usually on the control board or a loose fuse holder, or even an intermittent fuse.

You should do a continuity test the fuse while it's in the holder (with the microwave unplugged, of course) then turn the fuse by hand or take it out and put it back in, then test it again.

If you remove the fuse, then press the meter leads against the ends, it can allow internal contact to be made and make a bad fuse appear to be good.

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 when you plug it in or open or close the door, then there's a problem with a door switch or door switch mount.

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

If it has a hood thermostat, that should read open, as opposed to the others, which should read closed.

If you or someone you know decide to look into it, we have critical safety information and disassembly information at our site, and our link is at our listing here on FixYa: http://tinyurl.com/yzjozk

You can probably find an exploded view by entering your FULL model number here: http://www.searspartsdirect.com

We're happy to help and we appreciate your thoughtful rating of our answer.

William E. Miller, AS-EET
prototech@usa.net
http://www.microwavedisplay.com

Posted on Apr 23, 2008

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