Question about Sharp R-520LK Microwave Oven

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Sharp R-403K Light comes on and time counts down, but fan doesn't come on, turntable doesn't spin and it doesn't heat, no audio

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Hi,
Here is a tip that will help you to figure out what is wrong with your Microwave Oven....

Microwave Oven Basic Troubleshooting Tips
http://www.fixya.com/support/r5508031-microwave_oven_basic_troubleshooting

heatman101

Posted on Aug 23, 2010

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6ya6ya
  • 2 Answers

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Posted on Jan 02, 2017

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1 Answer

Turntable does not spin, no heat


HV fuse has failed. Possibly caused by door switches or Diode Pack failure. Do not attempt a repair unless you are competent to do so. Extremely hazardous voltages inside!

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I'd check to make sure you don't have a door switch that isn't functioning properly. Also, might be a control panel or control panel interface issue.

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Stopped turning and heating


The problem is one or two bad door switches, "more than likely" the less likely is the keypad control board.

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My microwave doesn't work, but display works


I would strongly consider replacing the microwave oven, prices have dropped considerably. The problem you are describing is in the keypad controller board.

Apr 01, 2012 | Samsung Microwave Ovens

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Lights up counts down and thats it no fan no spin no heating


I believe that there are to fuses inside this unit. One feeds the electronic components and the other feeds the turntable and the magnitron. Un plug the unit and check both fuses, you might get away with this cheaply. Please let me know if this helps. P.S. if one of the fuses continues to blow its time to get rid of the unit, because if they go bad they get stronger and very dangerous. What normally would boil water at 3 minutes could change to 45 seconds. Be careful.

Aug 13, 2009 | Zanussi ZM24ST Microwave Oven

1 Answer

Dacor dcm24s.light, fan, and control panel work but turntable and heat do not


Most likely the bottom door switch. Dacor units are built by Sharp and that switch is a very common problem. You'd either need to check the switch with an ohm meter or remove the cover of the switch to see if it's burned inside.

Oct 20, 2008 | Sharp R-930AK Convection/Microwave Oven

1 Answer

Nnt553w panasonic microwave. Whilst heating something he oven stopped and the display said refer to operating instructions. Now seems to be working but doesn't heat.


When you enter the time and press Start:

Does the inside light come on?

Does the turntable rotate?

Do you hear the internal cooling fan running?

Does the time count down?

May 25, 2008 | Panasonic Microwave Ovens

1 Answer

No fan, turntable or heat, but counts downs


The 'Clock, is Machanical just like an ordinary kitchen timer The reast of it is electronic, and at that age time for a new one.

Jun 26, 2007 | GE JE1640WA/GA Microwave Oven

1 Answer

No Heat


This is probably due to a bad door switch, most likely the top one. The microwave got hot because the cooling fan was not running. If you or a friend decide to work on it, we have *critical* safety, disassembly, and troubleshooting info (as well as a text file which helps in diagnosing and repairing door switch problems) at our site, which is linked at our listing here on FixYa: http://tinyurl.com/yzjozk You can find helpful exploded view diagrams and order parts by entering your model number here: http://www3.sears.com/

Apr 26, 2007 | Sharp R-1492 Microwave Oven

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