Panasonic NN-T990SA Microwave Oven Logo
Posted on Dec 27, 2007
Answered by a Fixya Expert

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PANASONIC NN-S933BF 1300 WATT INVERTER

WORKS FINE EXCEPT AT THE END OF THE CYCLE IT CUTS OFF AS IT SHOULD BUT WHEN YOU OPEN THE DOOR IT STARTS BACK UP. THE TURNTABLE TURNS, THE VENT FAN COMES ON AND I ASSUME THE WHOLE THING IS ON.
DISPLAY LOOKS FINE, BUT WHEN YOU OPEN THE DOOR EVERYTHING COMES ON. BAD DOOR LATCH OR INTERLOCK?

  • 3 more comments 
  • Anonymous Jan 01, 2008

    I have this exact same problem what is going on

  • Anonymous Jan 05, 2008

    I have the same problem. Is there a fix or is it time to buy a new one?

  • Anonymous Apr 17, 2008

    I have the same problem what should I do?

  • golfher11 Jun 29, 2008

    When I open the door the turntable turns and the fan comes on.

    Works fine when door is shut again and timer keys are pressed. Is this dangerous?

  • Anonymous Sep 18, 2008

    WORKS FINE EXCEPT AT THE END OF THE CYCLE IT CUTS OFF AS IT SHOULD BUT WHEN YOU OPEN THE DOOR IT STARTS UP.

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1 Answer

Anonymous

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  • Master 579 Answers
  • Posted on Jan 01, 2008
Anonymous
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Joined: Oct 05, 2007
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Yes, get that fixed. it is a danger.

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PANASONIC Microwave Inverter #NN-SD697S. Everything works except the START button. Works sometimes, and not other times. Checked outlet, all was good.

This is either the door sensing switch (most likely) or a bad membrane switch [start switch] (that's what Panasonic calls it) on the touch pad. The contacts on the door sensing switch can be slightly contaminated and not read "zero ohms" to the control PCB. The control board thinks that the door is open and it will not allow the cook cycle to start.
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Microwave will not shut off when the door is opened. Keeps operating

Hi,

The door switch has gone bad...


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We own a Panasonic 1100 watt Inverter microwave. It has worked fine until recently - it has now started to "turn on" whenever the door is opened. Now, when you open the door the light...

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You have a faulty door switch, the unit is not supposed to come on when the door is opened only the light.This unit may require servicing as the control board may also be at fault.
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Runs with door open

This is a danger, cease using it immediately as scatter radiation is emiited in this situation. The door lock needs replacing to bring it back to safety regulation standard.

Take it for repair, or replace it with a new unit.

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NN-T774 INVERTER STOPPED WORKING AFTER 4 WEEKS

Check to make sure one of the plastic hooks on the door was not broken off. If both door hook latches are functional then the most likely cause of your problem is one of the latch switches located behind the control panel. These switches will fail if the oven user opens the door frequently BEFORE the cook cycle ends. Always push STOP/RESET before opening any microwave oven door.
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I have just had this problem where the oven will only run for 5 seconds and then turns off model #NNS561. Cant find any solution.
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Turns on with door open

It's likely that it's only the fan and light coming on when the door is open. But even so, it's not normal, and it should be fixed. It's not a reset issue. It's likely a broken door switch mount caused by a door slam or by inferior material, or a defective door switch caused by opening the door while the oven is cooking instead of hitting the "STOP" key first. You can do a Google search for my text file "doorsw.txt" which will give safety info and help in checking the door switches. Also, the plastic pieces on which the door switches are mounted should be checked, as well as the door alignment. It's usually the upper door switch or mount that causes this, but occasioanlly it's a problem on the control circuit board. Post again if more help is needed.
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