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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SOURCE: I have freestanding Series 8 dishwasher. Lately during the filling cycle water hammer is occurring. How can this be resolved

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Posted on Jan 02, 2017

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MicrowaveSvc
  • 9098 Answers

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
  • 9098 Answers

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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1 Answer

Microwave makes a loud roaring sound when start is pressed to cook something. The turntable turns and lights go on, but sound is horendous. We quickly stop it fearing it might be melting down.


Most likely it is the magnatron has gone bad, this or the fan for the magnatron. If your handy you can dissasemble the unit and look for a damaged fan, if none found then the magnatron is most likely bad.

May 07, 2011 | Sharp R-308J Microwave Oven

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Does not heat anymore, power is going to unit, the clock, and fan work, light still works but it will not heat and makes a low growling sound when we try to run it. Help!


What you are describing is a problem with the magnetron and it has become faulty, that is the main part that heats the food, the growling sound indicates it is loading down the power transformer that energizes the magnetron. The repair cost will not justify the expense "costly" replacement of the microwave oven "cheaper" in the long run.

Jan 21, 2011 | Kenmore 80412 Microwave Oven

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We have just purchased a Kenwood microwave/combination oven and are concerned there may be a problem. When the food has finished cooking and the microwave beeps it seems there is a fan or something still...


In most modern combination microwave ovens, if not all, there is a fan that comes on after use to cool the magnetron and cavity down. This is quite normal but if you still have doubts, contact Kenwood's web site and send them a question.
Hope this halps to put your mind at rest.

Nov 27, 2010 | Microwave Ovens

1 Answer

I have a ge spacemaker over the range microwave oven model number jvm1631bj02 and it blows fuse after fuse and seems to blow right before the fan would engage within the first couple of seconds


Sounds like you have a shorted fan motor. Disconnect the power going to the fan and then try turning the microwave on again. Do not run the microwave for more than 5 or 6 seconds without the fan operating. If this does not cure your problem then the next most likely problem is either the AC Capacitor (silver can), or the Magnatron (4 inch square silver unit with cooling fins and thick wires. The voltage present on these two units can hold a charge in excess of 5000 volts, even after a time it is unpluged. Don't go near these unless you know what you are doing.

Best of luck.

Jan 20, 2010 | GE Microwave Ovens

1 Answer

No heat


If you remove the outer cover of the microwave, you will see a magnatron. Usually on the RHSide of the micro. This magnatron will need replacing. On the magnatron,is an over temp.sensor. If this gets hot excessively, then all will stop untill it cools down. This indicates magnatron is faulty.(Assuming cooling fan runs when micro program is selected and switched on). Honestly, i would suggest caution if undergoing this repair as the voltages are extreemly high and there are proceedures to repair theese units. Testing equiptment a must.

Sep 14, 2009 | GE Microwave Ovens

2 Answers

Does everything but heat food.


Sounds like the magnatron tube or it's fuse.

Aug 11, 2009 | Kenmore 80809 Microwave Oven

1 Answer

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.


Mar 05, 2009 | Kenmore 62622 Microwave Oven

1 Answer

Microwave won't heat


The two possible causes are a faulty door switch and a bad magnatron. You can pull the top cover off of the unit and check all of the door switches (there are 2-6 of them all on a common rail, me normally closed)). If the door switches all check out, replace the magnatron, diodesmag-glass_10x10.gif, and capacitor

Oct 28, 2008 | Kenmore 62622 Microwave Oven

1 Answer

Hotpoint Microwave Mod. # RVM1435WD001 Stopped warming


I just had the same problem with my over the range microwave in my RV. I took the unit out, took the cover off to expose the inside and found that the magnatron was fried (where the wires plug into the magnatron, the plastic shield was melted). I ordered a new one from repairclinic.com for 126.00. It was very easy to install, only one screw held it in.

Jun 30, 2008 | Microwave Ovens

2 Answers

Panasonic NN-2501 Microwave Oven range hood


It is possible that the magnatron is bad but hard to say on a no heat problem without checking all components. A lot of model give 5-7 yr warranty on that part.

Oct 05, 2007 | Panasonic NN-S251 Microwave Oven

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