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Microwave gets no heat

My microwave died, I followed you hint & replaced the 20A fuse. After doing so the microwave turns on but it does not seem to be heating up. What do I do now?

Posted by melissa hoff on

  • 2 more comments 
  • dwc928s4 Nov 27, 2007

    Mine tuns on, light comes on, turntalbe turns, but does'nt heat anything. also, it use to make just a standard humming noise when cooking, now the tone is louder, and lower pitched.

  • Anonymous Feb 22, 2008

    when i tune on my microwave ovan i do not get heat

  • Anonymous Mar 17, 2008

    mine does the same, it turns round, the light turns on, the motor sounds (a little louder than normal) but no heat is given out.

    What could be causing this?

  • Anonymous Jan 31, 2009

    shut the door. light goes out. key in a time. press start. light comes on. fan comes on. turntable turns. food comes out cold. no heat. microwave is less than 2 months old. it appears to be a fairly common problem with emerson microwaves.



1 Answer

William Miller

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This could be due to a bad door switch, or a defective part in the high voltage section. You can find my helpful and detailed text file "doorsw.txt" by going to Yahoo.com (not Google) and searching for microwave doorsw.txt Some questions: When you enter the cooking tme and press START, does the inside light come on? The fan? Is it making any unusual noise?

Posted on Nov 20, 2006

  • HariGB Jan 09, 2011

    If the microwave appears to be working (ie: light comes on, turntable turns) but there is no heating of the food, it could possibly be your high voltage fuse - normally 5kv 700mA or 0.7A. Check and if faulty replace with same specification component. HariGB



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