Question about Kenmore 80402 Microwave Oven

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My microwave developed a tube running down from

My microwave (Kenmore mod 665.69687992, over-the-range, with fan) developed a tube running down from the magnatron inside the unit. It seems to be the result of the cover on top, inside, melting. The tube is the same color as the cover and inside the tube is a dirty-looking brown liquid deposit. This happened this weekend when people were visiting and I do not know the cause (ie, what might have been heated to cause this). This unit is one that was fixed in 2002 as part of the recall.

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6 Suggested Answers

6ya6ya
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Posted on Jan 02, 2017

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MicrowaveSvc
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SOURCE: Magnatron Heat Sink Gets Hot But Not Food

Important: Does it sound any louder or quieter when cooking than it used to?

If the magnetron's getting hot, you're getting high voltage.

Chances are it overheated and the magnet cracked.

If the internal cooling fan (usually separate from the vent fan) fails, that will allow it to overheat, too.

If it's within the magnetron warranty period, Sears will cover the part, but not the labor to visit you or do the work.

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

Posted on May 24, 2008

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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

ginko
  • 19396 Answers

SOURCE: kenmore microwave model 665.68681891 runs but won't heat

Test the high voltage capacitor, the rectifier diode.or the magnetron. If all this are fine, test the control board.

If it additionally does not spin and no light, then check also the door switch and fuse.

The diode and capacitors can br tested. The capacitor must be allowed discharge before testing, or you risk to get electrocuted, even if power is off. Capacitors can get discharged by shorting their two contacts.
Replace the magnetron if the checks and all of the high voltage component tests are good, but the unit still does not heat.

All locations, and description of this parts can be located using the diagram here: Counter top.

Parts must be tested to find out what is wrong.

Remember that microwaves are potentially dangerous devices if not repaired properly, the job must be done by a competent person.
A microwave energy leakage test must always be performed when the oven is serviced for any reason.

Regarding parts, contact the seller here to purchase parts. (here in UK).

Posted on Apr 27, 2009

  • 1 Answer

SOURCE: Generic problem for all Kenmore Microwave

Loud hum is usually due to faulty hv diod, resonance capacitor, or the magnatrone feed thru capacitor , chk it with a ohm meter , one by one n replace it .. zaheer Islamabad

Posted on Dec 31, 2009

heatman101
  • 43501 Answers

SOURCE: My Kenmore Microwave Hood Combination Model

Hi,
Here is a tip that will help you to figure out what is wrong with your Microwave Oven....

Microwave Oven Basic Troubleshooting Tips
http://www.fixya.com/support/r5508031-microwave_oven_basic_troubleshooting

heatman101

Posted on Aug 23, 2010

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