Question about Panasonic NN-T551 Microwave Oven

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National Panasonic NN-5040

Hi. My microwave is not working. It powers on (the light inside the chamber glows) but the display (LED counter) does not come on and there is no response when pressing the buttons. And, there's a low humming noise when powered on (when the power switch in turned on). Any idea what I should be doing?

Thanks,

John

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Posted on Jan 02, 2017

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SOURCE: panasonic microwave no power or light

I must have suggested this 20 time today. if you open the casing you will find several fusees that the manufacturers don't want you to know about.
you have a 10 ampish large fuse that protects the power circuits ( transformer/magnatrons) smaller fuses for control circuits also might want to look atand reset the thermal cutouts. if it overheatedprior to failure

Posted on Feb 21, 2009

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SOURCE: Panasonic Microwave NN-T993SF has no power

most microwaves do have an internal ceramic fuse either 15 amp or 20 amp the cover has to come off to locate it usually at the top just behind the control board. do not touch the high voltage capacitor as it holds a charge even when the unit is unplugged.

Posted on Nov 07, 2009

miket756
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SOURCE: When I turn on the microwave there is a hum (model

this could be loss windings on the mains coil or the capasitor is shorting out my gess is its soon going to pack up on you,,,start saving up your pennies for a new microwave as ther so cheap now its realy not worth having them fixed

Posted on Mar 09, 2010

  • 1 Answer

SOURCE: panasonic NN-CD997S microwave

i have microwave problems power trip when switch on the unit. please help me.

Posted on May 29, 2010

  • 130 Answers

SOURCE: I HAVE NATIONAL MICROWAVE/CONVECTION OVEN MODEL

You can try MCM electronics, Digikey or Newark as they have replacement magnetrons. Also, replace the high voltage diode that is associated with that magnetron or you will probably burn up your newly acquired magnetron.

Energies associated with magnetrons can be fatal. Know what you are doing prior to replacement.

Posted on Apr 13, 2011

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small_6_37.jpg For a detailed Microwave illustration, click below.

redarrow.gif Counter top
redarrow.gif Built in
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Regards,
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DON'T FORGET TO RATE;

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