Question about Sharp R-1480 Microwave Oven

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Sharp Microwave Oven Corousel

I have replaced the fuse, and swithc on the oven it comes ok. As soon as I enter the time then when I press Start the fuse dead again. I tried using 13Amps fuse it works but humming is coming. I tried using 10 Amps fuse then immediately after pressing the start it goes off and the fuse dead. Please answer me at ajaz_nazeer@yahoo.com

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  • Ajaz Ahhmed Dec 31, 2007

    Thank a lot for your immediate reply. I will update you as soon as I solve the problem.

  • Ajaz Ahhmed Jan 01, 2008

    I have a doubt how come it is working if I use 13 Amps Fuse instead of 10 Amps. I see the oven was running with Humming sound. Any suggestions..

  • Ajaz Ahhmed Jan 01, 2008

    The old Fuse is M10A and I fix F10A then the fuse burnt. I tried 13A it is working but humming sound is coming and fuse is ok we tried this for 30 seconds with anything keeping in the oven. Since it is humming I thought it is better to use only 10Ams. Also I like to know M10A and F10A are both same or any difference ?

    Thanks a lot for your help.

    Ajaz


  • Ajaz Ahhmed Jan 01, 2008

    What if the oven is working ok with 13 Amps fuse, can I continue using oven without fear or I have to use only 10Amps fuse?


  • Ajaz Ahhmed Jan 05, 2008

    Thank u all for your openion. I able to figure out the problem and the problem was with Double Diode between the Capacitor terminals (1 and 3).

  • Anonymous Mar 13, 2014

    hkhke turn table on my sharp corousel microwave: model #209hk was working and then all of a sudden it stop. There is a humming noise when i set it to come on everything else is working fine. how do i try to

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  • Sharp Master
  • 9,098 Answers

I replied privately to this, stating it may be the HV capacitor, or possibly the magnetron or transformer and giving links.

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

Posted on Dec 31, 2007

  • 1 more comment 
  • William Miller
    William Miller Dec 31, 2007

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

  • William Miller
    William Miller Jan 01, 2008

    It should use a 15 or 20A fuse. There should be a warning label near the fuse holder.



    When everything's working right, it will draw a certain amount of current.



    Depending on the nature of the failure, it may draw more or less current.



    For example, if something is shorted, it will draw more and if the magnetron is not starting, it will draw less.



    Hope that explains that part of it.

  • William Miller
    William Miller Jan 01, 2008

    Sorry, I did not know you were outside the US.



    So I assume you are using this on 220V with an adapter or step-down transformer?



    If so, I would want to be sure the step-down transformer is working properly. If you have another one, you could try it.



    If the problem lies in the micreowave, I would say it is the high voltage transformer, but going beyond this level of diagnosis is difficult to do remotely.

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