Question about Sharp R-510HW Microwave Oven

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Sharps microwave i have a sharps microwave model r-520 JKF when you put the time to cook in the time part is work but the microwave is doing anything inside

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  • voltext2000 Jul 22, 2008

    Hi supporter I have a sharp carousel microwave and the timer works. But no light nor is it heating. Could it be the fuse or the magnetron? Any info would be highly appreciated. Thank you......



  • voltext2000 Jul 22, 2008

    Me again just to be on the right side. you asked these questions and the answer is no for all. Except for the timer when I push start, the timer counts down till it reaches zero then the normal beep sound.

    Just to be sure, you press Start and what happens? the timer counts down till it reaches zero then you hear the normal beep sound.



    Does it count down? yes, work's great.



    Does the inside light come on? NO



    Does the fan inside come one? NO



    Does the turntable rotate? certainly NOT!

  • chuckmct Oct 20, 2008

    I have a Sharp 520-K echibiting the same symptoms. When I hit the start button I hear a click (like a relay clicking) and then the timer starts counting down to zero. No fan, no turntable, no light, no nothing. It is now a 5 cu. ft. egg timer.

  • William Miller
    William Miller May 11, 2010

    Just to be sure, you press Start and what happens?



    Does it count down?



    Does the inside light come on?



    Does the fan inside come one?



    Does the turntable rotate?

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The door switches go bad...little micro-switches. Check them for switching on and off. Some are closed when the door is open, some are open when the door is open. It could even be that the catch has moved out of adjustment. If that isn't the problem, you have to consider the brain board which is usually so expensive that the microwave is not worth fixing.

Posted on Jul 23, 2008

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This is usually caused by either a bad door switch, a loose door switch mount, or occasionally a problem on the control panel.

Door switch or mount trouble can be 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 you or someone you know decide to look into it, we have critical information on safety, disassembly and door switches at our site, and our link is at our listing here on FixYa:.

You can probably find exploded views and order parts by entering your model number (R-520JKF) here at the Sears parts site.

The best place to order Sharp parts is Tritronics.

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

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Assuming the unit works ok other than the display, you have a problem common to many Sharp models.

Check with www.microwavedisplay.com - lots of info on this issue and they offer a repair service for the boards at a very reasonable price.

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I would say the high voltage diode blew.

If you or a friend decide to look into it, we have critical safety and disassembly information at our site, linked here on Fixya: http://tinyurl.com/yzjozk

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If it's not the high voltage diode, reply back for further help.

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