Question about Kenmore 62463 Microwave Oven

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Magnatron Heat Sink Gets Hot But Not Food

My kenmore 62463 was killed by the babysitter. She smoked a bag of popcorn to black dust. I've checked out all the steps that the tech sheet included. Kenmore was very kind to include that under the chassis cover. After checking static conditions, I ran the oven with a cup of water. Didn't heat the water at all but the heatsink on the magnatron got hot. Does this indicate I have High Voltage just Magnatron bad?

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  • 8,820 Answers

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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My maytag cmv1000ada starts and seems to be working, but barely warms food, it makes a little buzzy/ vibrating noise at startup but doesnt heat food like it used to example a bag of popcorn would be burnt...


Remove cover after disconnecting , check for dirt/moisture in the cabin, if so wipe clean and dry, check the magnetron and area clean and use an jet air to clean off. Check the wave guide covers, if food had deposited
then it must be checked or replaced. See link:
http://www.espares.co.uk/advice/microwave/a/5/1146/how-to-replace-a-microwave-guide-cover.html

Jan 31, 2013 | Sanyo Microwave Ovens

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Unit seems to have a sensor problem: wont pop popcorn, or heat cold food but marginly heats water. During popcorn we get error message re. Sensor.


in 99 % of cases the problem is the magnatron it is a very expensive part and unless the microwave is well worth the money we normally write the units off


sorry (

but i hope this helps

best of wishes

please remember to take the time to rank this reply .

Dec 08, 2010 | GE JE1590 Convection / Microwave Oven

1 Answer

Whirlpool gold gh5184xpb Everything seems to be working but it doesn't heat. If you use the buttons for popcorn or dinner plate, an error message F3H appears. Recently got a wireless router in our home...


its very unlikley to be the wireless router,,,
things like this just happen,,,i would say the magnatron had gust given up the ghost, thats the part that gets the food hot,,,safest bet is have it looked at but get ready to buy a new unit as its likley to be the cheepest way out
please dont go poking about inside your microwave,,
it will still have 1000's of volts inside it,,, these volts will kill you if you tuch the wrong part,,be warned!!!

Jun 05, 2010 | Whirlpool GH7155XHS Microwave Oven

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Everything runs but nothing gets hot?


Magnatron is possibly burnt out. This is the part that sends the waves through the food to heat it. The cost for one is possibly more than the cost to replace the whole microwave

Dave

Feb 24, 2010 | Microwave Ovens

1 Answer

I tried to reheat food and didn't get any results. Could I have ruined it by turning it on without food?


well if you keep on running your microwave without any thing in it then yes! it burns out the magnatron
(thats the bit the heat come from) and when there burned out its a dust bin jod as there very pricy to by and its not a smart thing to do trying to fit a new one by yourself,, you stand a very good chance of just killing yourself first,,to test your microwave opn the door put inside a cup of cold water and turn on the microwave for 3 mins on full power, the water should be boiling by then,,,dont put anything in the hot water like milk or it could explode in your face! just tip it away

Jan 09, 2010 | GE Spacemaker JVM1640SJ Microwave Oven

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

1 Answer

Top of over-the-range microwave hot to touch; normal?


A little over 100F is hotter than most folks can stand to touch, so it may not be seriously hot.

But if you're concerned, you might see if your dealer will let you test another one or a similar model at the store to see if it also gets that hot.

Otherwise, you can return it to be safe or you can contact Panasonic consumer electronics support here or at 1-800-211-7262 to ask them about it.

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

Jan 02, 2009 | Kenmore 62463 Microwave Oven

9 Answers

Magic Chef MCO153UW


The cooling fan is a must!

Otherwise, the magnetron will be ruined, and that drives up the repair cost.

If you or a friend decide to work on it, we have *critical* safety, disassembly, and troubleshooting info at our site, and our link is at our listing here on FixYa: http://tinyurl.com/yzjozk

You can order parts here: https://www.mcappliance.com/partorder.aspx

To contact Magic Chef about getting an *authorized* servicer, see: http://www.mcappliance.com/contactus/contactus.asp

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

Jan 06, 2008 | Magic Chef CMV1000B Microwave Oven

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Heat's water great , won't pop corn


It may be a food placement issue or possibly a bad humidity sensor.

I always recommend that folks put food off-center on the turntable (not in the center) to assure more even heating.

It's a stirring action, so imagine how inefficient it would be to stir just by twirling a spoon in the center of your coffee!

Also, when you put your food off-center, you're not putting it in the same spot every time. That will help prevent repeated heating of the the same spot on the glass, which can lead to weakness and cracking. Microwave popcorn gets hot enough to do that.

We have the entire service manual at our site if your or a friend want to look that over: http://www.microwavedisplay.com/r820bc_bk_bw_sm.pdf

If you need a new sensor, you can order Sharp parts from Tritronics at http://www.wehaveparts.com

Please write back with more details if you need further help.

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

Dec 02, 2007 | Sharp R-820B Convection/Microwave Oven

2 Answers

Panasonic Microwave NN-A770S getting hot on right side externally


If you described this to Panasonic very carefully, and they said it's normal, then I would say keep using it until such time that you get other symptoms. The inverter has some parts mounted on a large chunk of aluminum called a heat sink. It draws the heat out of the parts and the heat radiates and/or convects away. This keeps the circuit parts from overheating. As long as you have good air flow through the vents, it sounds okay.

Sep 13, 2007 | Microwave Ovens

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