Question about Kenmore 63682 / 63684 / 63689 Microwave Oven

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Kenmore Elite 63682 Loud Buzz

Our 5 year old Kenmore Elite Ultrawave Microwave Hood Combination started making minor scrathing noises, but worked fine. Did this for about a week. Suddenly, it started emitting a LOUD buzzing sound when we attempted to heat something.

From other posts, I suspect that this is a power diode, high-voltage capacitor, or magnetron. All these sound scary.

Is it time for a new unit (>$400) or can it be repaired?

Thanks in advance!!

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  • LisaMicro Feb 03, 2009

    For weeks, ours made this sound while running. When it stopped, the microwave power was at abou 25%. The Sears repairman came yesterday. The repair cost is $350.28 including a belt for the sliding table that he said was about to go. We're shopping for a new microwave.

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Posted on Jan 02, 2017

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MicrowaveSvc
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SOURCE: Microwave buzzing

It's likely a bad magnetron or maybe the high-voltage transformer. If it's within the warranty period of the magnetron (5 years or less), I would call Sears. In my professional opinion, no one should work on a microwave unless they are fully informed and aware of the deadly hazards and necessary precautions. If you or a friend decide to work on it, we have *critical* safety, disassembly, and troubleshooting info at our site, which is linked at our listing here on FixYa: http://tinyurl.com/yzjozk You can find helpful exploded view diagrams and order parts by entering your full model number (without the suffix) here: http://tinyurl.com/gv383

Posted on Mar 23, 2007

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SOURCE: Microwave heats but slowly.

This is the second time I have requested assitance on this site with no response. The beginning of this thread dates back two months. Why would I ever want to pay for support when it is so poor at this level?

Posted on Mar 04, 2008

  • 1 Answer

SOURCE: Kenmore over the range microwave

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Posted on Sep 26, 2008

MicrowaveSvc
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SOURCE: Kenmore microwave making loud buzzing sound.


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


Posted on Mar 06, 2009

  • 183 Answers

SOURCE: I have kenmore microwave model 721.80012401 it does not heat, I checked the magnetron thermostat, capacitor and the only thing that does not check out is the diode,can the diode cause this problem?

yes your diode can keep it from heating but it usually makes a loud growling if diode is bad. there is also another thermal disc on the other side of the oven that could be open. usually can see it in a hole in the plastic with 2 wires. if there is continuity on both this and the mag thermal, you may have a bad magnetron

Posted on Feb 12, 2012

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Makes a loud buzzing noise and does not get hot


Have seen this many times.

Sounds like a bad CAP since a bad diode would blow the fuse and a bad mag would likely do the same thing.

Since yours is making the loud 60hz buzz you need to replace the capacator that will likely fix the problem. A $10 fix

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Kenmore elite ultrawave microhood combination error code F9


F9 is normally a bad door switch or door switch mount.

If you or someone you know decide to look into it, we have critical safety information, info on door switch diagnosis and replacement, and disassembly information at our site, and our link is at our listing here on FixYa.

You can probably find exploded views and order parts by entering your model number here at the Sears parts site.

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

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

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Microwave makes loud noise and does not heat. Smell of light burning


Chances are you have a bad magnetron.

If it's within the magnetron portion of the warranty (usually 5-9 years) but out of the original full warranty (usually 1 year), then your manufacturer will cover the part cost, but not the cost to visit you or the labor charge to do the work.

If you or someone you know decide to look into it, we have critical safety information, info on door switch diagnosis and replacement, and disassembly information at our site, and our link is at our listing here on FixYa.

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" hidden inside the unit behind the control panel or hidden on the left side behind the grille, which is very helpful when troubleshooting & testing.

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

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Kenmore ultra elite microwave hood combination


F9 code can mean something different depending upon the particular model.....
1.) IF your Microwave uses "UltraWave technology"/"SmartWave technology"...Then either the Magnetron has failed or the Inverter board has failed OR maybe the control board has failed (HUH?).
2.) IF your Microwave does NOT use "UltraWave technology"/"SmartWave technology" then one or more of the door switches has failed.

** "UltraWave technology"/"SmartWave technology" **
I'll explain a few things about this wonderful technology...
The control board (accepts the pushbutton commands) has to talk to the inverter board to tell it how much power should be applied to the magnetron. The inverter board will then power the magnetron and inform the control board if the magnetron is working OK.
If there is something wrong with the magnetron or inverter board or a there is a communication breakdown between the control board and the inverter board...WA-LA-----F9----

A pretty reliable test for the Magnetron is to operate the oven and listen for a ticking sound 5-6 times about a second apart. If you can hear the ticking....The magnetron has failed..if no ticking, the control or inverter board failed.

Note: This 'technology' may come in other flavors as well

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