Question about Panasonic NN-SN657SMicrowave Oven

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My Panasonic 1300w microwave will not turn off. It doesn't cook but won't turn off without actually unplugging it or opening the door and leaving it open. Any help?

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  • Panasonic Master
  • 9,047 Answers

You may have a shorted door switch or a shorted relay on the control board.

You can see a help file on door switches here.

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

Posted on Dec 01, 2012

  • Kimberlee Castro Dec 01, 2012

    Hi William,

  • Kimberlee Castro Dec 01, 2012

    Thank you very much for your help. I will look into this and see if it does indeed fix the problem.

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6 Suggested Answers

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Posted on Jan 02, 2017

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  • 44 Answers

SOURCE: microwave is still running when the door is open

The cooling fans run for a time after the magnatrons have stopped, The magnatrons are the heating components so I dont think you are in any danger as the microwave doors are double locked so the magnatrons cant run once the door is open

Posted on Sep 27, 2009

MicrowaveSvc
  • 9047 Answers

SOURCE: Panasonic - convection/microwave oven door is

What usually breaks is the door open lever.

On a counter top model, the outer cover will need to be removed to diagnose and repair this. On an over-the-range model, only the control panel needs to be
removed.

Please unplug the oven first.

If you or someone you know wants to look into this, we have critical safety, disassembly, and troubleshooting info at our site, and our link is at our listing here on FixYa.

Once it is apart, you'll be able to see how the door open button would press against the door open lever, which would then lift up against the door latch heads (hook-like projections on the door) and the door should open.

You can order Panasonic parts here.

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

I hope this picture shows up - it helps illustrate:

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Posted on Aug 12, 2008

MicrowaveSvc
  • 9047 Answers

SOURCE: MICROWAVE TURNS ON WHEN DOOR IS OPENED.

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

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

Door switches are most often damaged by opening the door while it's cooking (instead of pressing Stop / Clear first) or food
/ grease debris in the switch.

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

Posted on Nov 05, 2007

  • 140 Answers

SOURCE: I cannot open the door of my Panasonic NN-T543W microwave

Well do not pry the door open since there is an easier remedy which will lead you in the direction that you need to fix your problem. Take the cover off after you disconnect the power to it. Once you have taken the cover off (only a few screws) you will be able to see the two latches that hold the door closed and the link that opens both of them. You can just lift both latches at the same time and it will open. After you have done that take a good look and press in on the open door button and you will see where you have the problem of the door hanging. That button should push a linkage that pushes up on both latches at once to open the door. It is spring loaded so that it comes back down so that when you close the door it will hold the door closed. Anyway that is where your problem is. Let me know if you need more hlep.

Posted on Feb 09, 2009

bestdarngood
  • 3037 Answers

SOURCE: My Panasonic Microwave Genius 1300W will not heat

Sounds like the magnetron has failed. This is the component that produces the microwaves that heats the food.

The cost of the magnetron is about 95% of the cost of a microwave oven. Most people don't, for this reason, replace the magnetron, they replace the whole oven which is probably what you will end up doing.

There is a possibility that the circuit that provides power to the magnetron is faulty and you need to take it apart, find the proper electrical leads and test them with a volt meter. To do this you have to remove it from its mounting and take it apart. It is a fairly lengthy process however.


Benjamin

Posted on May 26, 2009

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Thanks for your question @ FixYa.com

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