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john bouldin Posted on Mar 27, 2012
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My frigadare microwave runs normal but wont heat the food

Was cooking food after food was done micro wave sound like it was still running but not like the normal sound smell a burning smell then went out unplug it and plug it back up put food in and would not warm food what could be the problem and can it be something i can fix my self its a oven the top range microwave

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  • Frigidaire Master 6,771 Answers
  • Posted on Mar 28, 2012
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From the description you have provided, the magnetron has shorted. This a job for a professional because there is lethal voltages present that will kill.

5 Related Answers

Anonymous

  • 473 Answers
  • Posted on Oct 10, 2007

SOURCE: GE PRofile Spacemaker XL Microwave Oven Model# JVM1460 950 watts

Sounds like the problem is in the high voltage. Most common would be magnatron, capacitor and diode. For safety reasons this should be checked by a professional. Look in your owners manual because some high voltage parts have a longer warranty than 1 yr.

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Anonymous

  • 1 Answer
  • Posted on Nov 19, 2007

SOURCE: GE Over range microwave, JVM1660

Was it the magnetron. Ours just gave up the ghost(heat) yesterday.

MicrowaveSvc

William Miller

  • 9179 Answers
  • Posted on Dec 09, 2007

SOURCE: GE JVM130 001 Over Range Microwave does not heat

It's probably the high voltage rectifier diode or magnetron.

The magnetron will have a guarantee lasting about 5-9 years, so if it might be covered, contact GE at http://www.geappliances.com/service_and_support/contact/

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 usually find helpful exploded view diagrams and order parts by entering your full model number here: http://tinyurl.com/gv383
Also, there should be a very helpful "mini-manual" hidden inside the unit behind the control panel.

Anonymous

  • 706 Answers
  • Posted on Nov 22, 2008

SOURCE: burning wire smell

Hello jvtmad1,
All of the previous comments are relatively good ideas but let me offer some additional advice,
First off, You need to determine if the burning smell is coming from the Microwave itself or from the receptacle that provides power to it. Most wall receptacles are rated for 15 amps and should easily handle your microwave ovens power requirements. A simple check might be to run a hair dryer on the same receptacle without the microwave plugged into it. They draw comparable power so that should eliminate the recptacle as the culpret, On the assumption that the burnt wire smell is coming from the microwave itself, then your best bet is to return it to the store for a repair or replacement. Unless you are properly trained on how to sservice that, you probably shouldn't attempt it. As stated in previous comments, it should still be under warranty. If you have a bad filament transformer, magnetron or the wiring between them, that is not something you want to fiddle with yourself.
In summary, eliminate the receptacle on the wall as being the problem first.
If you find tha your receptacle is the problem, then you may be able to remove or disable power to it by switching off teh appropriate circuit breaker or fuse.. then take off the face plate and check the integrity of the wires going to that receptacle and making sure they are tightly secured to the terminals of the receptacle. I would assume that if that were the problem, you would notice a burnt smell as soon as you took off the face plate. Hope some of thes ideas help you resolve your problem...
Regards,
Rick

MicrowaveSvc

William Miller

  • 9179 Answers
  • Posted on Nov 25, 2008

SOURCE: LG LMVM1935SB Microwave won't heat anymore!

With these symptoms, I would suspect 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.

Some manufacturers will send you the magnetron to do it yourself. If nothing else, you can save about $75 by taking it to the shop yourself.

Here are some links you or someone you know can use (in order given) for test help, but read the safety warnings first:

http://www.gallawa.com/microtech/diode.html (if it is NOT shorted, it's probably fine)
http://www.gallawa.com/microtech/mag_test.html (continuity can be good even though it is bad!)
http://www.gallawa.com/microtech/xformer.html

To order Goldstar / L.G. parts, visit Vance Baldwin Electronics.

For more Goldstar / LG / L.G. help, call 1-800-243-0000 (M-F, 7am-8pm CT, Sat 8-5 CT) and choose the appropriate prompt from the menu or
visit here. You can get warranty info & find a local authorized servicer.

L.G. / Goldstar owner's manuals can be downloaded here.

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

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the Magnetron has gone (yes it's really called that) that's the part of the microwave that emits radio waves and cooks your food... 30 years ago when this tech (Microwave cooking) was new and expensive it was cheaper to replace that part than buy new... now it's the other way around... at least you still have a working electric convection oven.
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If you hear an unusual buzzing noise, the magnetron (the component that actually generates the microwaves) or other electronic module may be broken. This is not easily fixed; contact a service technician.

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on May 07, 2010 • Microwave Ovens
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1answer

My microwave starts however food does not heat up.

Micro wave as the name suggests produces heat when the micro waves aimed at an object causes the water molecules inside the object to vibrate hence producing heat.The gadget responsible is the magnetron. If your magnetron is not receiving ht voltage or receiving but faulty, then your micro wave wont work please take precaution when opening micro wave due to high voltage caps that remain charged sometimes even when it is off.check the high voltage fuse/ diode and capacitor if they are fine and the step up trans former o.k then the only option is to replace the magnetron
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Sparks and strange noise when microwave is turned on even when empty inside. i have a ge jvm1850smss over the oven microwave.

YOU SHOULD NOT RUN MICRO WITHOUT ANY THING IN IT / THIS WILL OVER LOAD THE MAG TUBE . AND SOME TIMES FRY IT .. The sparking and arcing is probably a bad wave guide . this is sometimes caused by food splater / it gets in the cracks and corners and then cooks till it truns to carbon which conduts the micro's and thus arching .. clean it good and touch up any burns in the metal and repl wave guide cover. mm hope this will help .. mm
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Boiling waer under micro wave lots of steam into micro wave, turn on micro wave ,pop noise like glass miro wave comes on louder hum than normal no heat

Q - The microwave display counts down and the inside light is on,  but nothing is heating and the fan is not running.
A - This most commonly is a bad door switch, other possible problems are a faulty relay or solder joint on the power module, but a bad door switch is most common.
 Q - My microwave is running and sounds like it is working but will not heat up anything.
A - Many thing can do this but, common things are....loose high voltage wire.....poor solder joint on board.....magnetron.....power relay.....
Q - The microwave makes a loud "hum or buzz" noise but will not heat up the food?
A - 9 times out of 10 this is usually this is a bad magnetron, the other time is sometimes a bad high voltage diode. See components section.

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I have a GE Spacemaker Microwave, model # JVM1650WB008

The lights work and everything runs in a normal operation, it will not heat the food. I have changed the fuse and still the same, no heat.
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I have a JVM1603BJ03 space saver micro wave. The turn table cracked in two, the plastic support device to turn the glass table has desenigrated into several small pieces. It appears the micro wave is...

Do you cook a lot of popcorn?

Do you place your food items in the center of the turntable as opposed to placing them off-center?

Both can cause repeated heating of the same spot on the turntable, which can stress it and allow it to crack.

You can buy replacement parts here.

I suggest that when you cook popcorn, place a paper plate or two upside-down under the bag and always place your food items off-center on the turntable tray.

Once you have the new parts, I would suggest at least a quick heat test. That is to heat one cup of water on high and it should boil in about 2 to 2-1/2 minutes.

If you would like to perform a more standard heat test, please see my Ask Mr. Microwave page.

If your magnetron is indeed running too hot, then it is probably dying. Sometimes - like a star - they can burn hotter right before they die.

We're happy to help and we appreciate your thoughtful rating of our answer.
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Microwave does not heat food placed in the center of the turntable. Leaves a cold spot in the middle of the food.

This is normal. That's why I always recommend to my customers that the food be placed slightly off-center on the turntable. An analogy I refer to is stirring paint: If you stir paint with a stick by simply rotating the stick in the center of the can, it's far less effective than pulling the stick around an imaginary circle halfway bewteen the center and the edge.
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