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

Its a 5 yrs old Whrilpool Over the counter Microwave. All of a suden it tarted to make loud noise, 3 times usual level, and food does not heat up. Can smell light burnig.

Can this be fixed? Please advise makes noise and does not heat up
microwave hood combination kenmore

makes noise , will not heat

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  • hp429 Sep 16, 2008

    I just installed a used 1000W microwave.  It doesn't heat and smoke is coming out of the vents.  It smells like an electrical part overheating.  It sounds like it is humming louder than it should be.  The 15A circuit breaker popped after running 30 seconds so I plugged it into a 20A.  After 45 seconds it started with the smoking so I unplugged it.  The guy I bought it from says it worked when he bought the house but replaced it during the remodel.  He ran it for about 30 seconds (with nothing in it) to make sure it still worked before selling it.  I read that is bad for them.  I would like to repair it if possible because it was a good deal ($80).  I still want my money back though.  Whirlpool model MH1141XMQ-0.

  • Anonymous Mar 29, 2014

    Intello Wave Even Heat System

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  • Microwave Ovens Master
  • 8,820 Answers

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.

Posted on Jul 28, 2008

2 Suggested Answers

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

replace it

Posted on Aug 07, 2008

shaggyrat
  • 1224 Answers

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

yes anything can be fixed but a do it yourselfer i reccomend against this cause thats a radiated element in the micro
recommend go out and purchase a replacement go with G.E. they have the 7 year warranty great little micro. too change out is easy

Posted on Jun 02, 2008

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If that grinding noise sounds a little like gargling into a coffee cup, that's a defective magnetron.

You can download GE owner's manuals and installation instructions here.

You can find helpful exploded view diagrams and order parts by entering your full model number from the tag on the oven 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 loud noise and no heat means that the magnetron has failed. It the part that generates the microwaves that heat the food. When it fails it shorts out, causing the transformer to heat up. That is what was causing the burning smell. The cost of a replacement magnetron is around $130-150 range so it may not make sense to have it fixed.

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Our Sharp microwave oven turns on, makes a loud humming noise, starts to smell like something is burning, but doesn't heat. Well, actually, we don't think it heats, we're too scared to let it run because...


Normal 0 MicrosoftInternetExplorer4 /* Style Definitions */ table.MsoNormalTable {mso-style-name:"Table Normal"; mso-tstyle-rowband-size:0; mso-tstyle-colband-size:0; mso-style-noshow:yes; mso-style-parent:""; mso-padding-alt:0in 5.4pt 0in 5.4pt; mso-para-margin:0in; mso-para-margin-bottom:.0001pt; mso-pagination:widow-orphan; font-size:10.0pt; font-family:"Times New Roman"; mso-fareast-font-family:"Times New Roman";} This can be caused by grease etc. inside the oven and on the wave guide which is the paper like thing in the oven. If you can remove it look for burnt areas which may can be scraped off or you may need to replace it. An appliance parts store usually has the material you can cut to fit you own.

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You either have a bad magnetron tube (5 or 10 year parts warranty item through GE Factory Service 1-800-432-2737 or www.geappliances.com) or a shorted high voltage rectifier. I think the light being out is a secondary problem.

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


yes anything can be fixed but a do it yourselfer i reccomend against this cause thats a radiated element in the micro
recommend go out and purchase a replacement go with G.E. they have the 7 year warranty great little micro. too change out is easy

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It sounds like your magnetron has failed.

I would put a cup or so of water in it and heat it for about 3 minutes.

Then check inside and see if you smell any electrical burning or other smell.

You should have a 5-year warranty on the magnetron.

GE Customer Service is at http://www.geappliances.com/service_and_support/contact/

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

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


The noise is coming from the high-voltage transformer being overloaded by something shorting it out. Either the magnatron or the high-voltage capacitor and diode. Replace the capacitor and diode then if still not working, replace the magnatron. Its only affordable if you do it yourself - buy the part on EBAY - lookup "universal magnatron"
Hope ya fix it!

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