Question about Panasonic NN-S961 Microwave Oven

1 Answer

Microwave on its way out?

Bought the MW in Early 2002. About 3 weeks ago it started doing the following: Turntable and fan would begin running whenever the door was open. It was apparently not radiating as I checked it with a small bowl of water.

Last night I was cooking some MW popcorn and 3 seconds into its cycle it just stops operating. Interior light still on, MV timer still decrementing, no fan, no turntable motion. After 3 seconds of this, the MV timer blanks ans it goes back into normal mode as if I had never set its timer.

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  • bsirvine Feb 26, 2008

    Thank you very much for the solution to the door problem. Did you get a chance to look at the second paragraph?

    "Last night I was cooking some MW popcorn and 3 seconds into its cycle
    it just stops operating. Interior light still on, MV timer still
    decrementing, no fan, no turntable motion. After 3 seconds of this, the
    MW timer blanks ans it goes back into normal mode as if I had never set
    its timer."

    Now it has gotten to the point where if I stick around and reset and restart 1one out of 3 times it will continue through its cycle perfectly as if nothing is wrong. On 2 out of 3 times it will audibly "pause" (or hiccup) after about 3 seconds. Then half the time it will quit and blank the timer; the other half of the time it will hiccup again after 3 seconds and then continue as if nothing was wrong. Any ideas about this?

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  • Panasonic Master
  • 8,865 Answers

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.

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.

If you or a friend 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: http://tinyurl.com/yzjozk

You can find helpful exploded view diagrams and order parts by entering your full model number here: http://tinyurl.com/gv383

If you think the problem is on the control panel, which we repair these nationwide for $39.95 postpaid.

We're happy to help and we appreciate your thoughtful rating of our answer.

Posted on Feb 25, 2008

  • William Miller
    William Miller Feb 27, 2008


    I would take it one step at a time and check and replace the switches as needed.

    And as my door switch info mentions, you should check the door switch mounts, too.

    Once you've done that, let's see if things change, and if so, how.

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This is a classic door switch problem. I fixed a friend's MW a few months ago that had this exact symptom. Got a family member's MW going again last summer for similar (not identical) problem.

In our case, one of the switches was broken (shorted). There are usually a group of similar door switches all mechanically ganged together behind the latch. If the MW has a wiring diagram, you can use it to figure out which switch controls the light, fan and turntable. Check the switch with ohm-meter after you get it out. The switch plunger may have lost it's springiness.

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mwswitchtest.jpg

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