Question about Sharp R-520J 1200 Watts Microwave Oven

1 Answer

The motor stopped running. the numbers and panel/light work, but if you push start, it counts down, with no sound

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  • kat242424 Nov 12, 2009

    So, would I need to order a new magnitron?



    It is an above the range microwave. Does that change anything to your diagnosis.



    Thanks for your help :-)

  • kat242424 Nov 12, 2009

    The solution helper was SO HELPFUL! I went to his website and learned so much!! Thanks!

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Sounds like you either have a problem with the main control panel circuit or the magnetron. If it was the magnetron, then it would run but just wouldn't heat. You are looking more at control panel/board issue.
You can get parts and manual at repairclinic.com or partslect.com

Posted on Nov 12, 2009

  • Nate Stansfield
    Nate Stansfield Nov 12, 2009

    This
    is usually caused by either a bad door switch, a loose door switch
    mount (which are pretty simple problems to fix) or
    occasionally a
    problem on the control panel.




    Even though a door
    switch clicks, it may still be bad inside.




    Door switch
    or mount trouble is usually caused by slamming the door or by opening
    the
    door while it's cooking without hitting the Stop pad first.




    There are
    plastic mounts inside the microwave which hold the door switches and
    onto which the door latches lock when you close the door.




    The screws on these
    mounts may be loose. If they get too loose, the switches will not be
    activated properly.




    Sometimes it's
    a broken tab on the switch holder, allowing the switch to rotate just
    out of position.
    This tab
    can be hard to see, since it is under the
    bottom edge of the switch.




    If the switch mount is
    broken, it's usually more economical and
    safer to add a dab or two of hot glue to the mount to secure the
    switch. Let it cool for about 30 minutes before using.




    One test that sometimes
    helps is to
    gently lift up (and/or push down) on the door or handle as you try to
    start it. If it works or tries to work, then it's a door switch mount
    or
    door alignment issue.




    You can find helpful
    exploded view diagrams and order parts by entering your full model
    number
    here.



    There
    should be a "mini-manual" (tech sheet) hidden inside the unit
    behind the
    control panel or hidden on the left side behind the grille, which is
    very helpful when troubleshooting, testing, and locating
    components.








    At
    our Web site, we have a video
    available showing how to remove a typical
    over the range control panel assembly in under 5 minutes.




    If you don't find yours,
    or if you want to look at it without disassembling the oven, you can
    download it
    here.



    If you only need a
    switch, you can order a universal type
    here for $5 postpaid.



    If you think the problem
    is on the control panel,
    we repair these nationwide by mail
    for $39.95 postpaid in most cases in about a week or so with a one-year
    guarantee.




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




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