Question about Panasonic NN-C980 Convection/Microwave Oven

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Model NN-C980B/NN-C980W: when new,the turn table only work when door is closed; past month: turn table operates even when door is open, and changes direction when light force applied to the plate; yersterday: after entering proper info , turn table stopped turning and microwave disengage after 3 seconds. control panel is working. ty

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6 Suggested Answers

6ya6ya
  • 2 Answers

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Posted on Jan 02, 2017

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

MicrowaveSvc
  • 9047 Answers

SOURCE: operates for 3 seconds on microwave then stops

If the digital programmer circuit / controller does not get a feedback signal from the inverter for a period of 3 seconds, the controller will stop the cook cycle.

It could possibly be as simple as a loose connection in that area. The repair shop your friend used may not have been Panasonic-authorized.

Due to the lethal voltages used and produced, I do not recommend that an inexperienced person work on these.

I would recommend that you contact your nearest Panasonic-authorized servicer.

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

Posted on Sep 16, 2008

rhozel2010
  • 269 Answers

SOURCE: NN-C980W Microwave start and stop after 2 seconds.

H!, its either you have a defective magnetron, hv transformer or a leaky capacitor.

Posted on Sep 15, 2009

joust
  • 7 Answers

SOURCE: Panasonic NN-C980B stopped working. Blown fuse.

Sometimes when the mag shorts it takes out the inverter. I would measure the mag leads to ground and they should be open or 20M or so. If you have both a mag and inverter bad it's probably time for a new oven.

Posted on Jun 02, 2010

  • 1 Answer

SOURCE: Panasonic NN-T994SF Microwave Oven quits after 15 seconds

my microwave shuts off after a few seconds. is there a fuse that needs replacing?

Posted on Nov 24, 2010

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You must adt. the door latch switch assembly to make sure that the door hooks make contact with the switches. Common problem is that the assembly is bent and must be perpendicular to the door.If it is bent the switch will not make contact with the door hooks.
Place a dab of lithium grease on the tip of the door hooks to ease closing the door. This is the cause of the bent switch assembly!

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Sometimes when the mag shorts it takes out the inverter. I would measure the mag leads to ground and they should be open or 20M or so. If you have both a mag and inverter bad it's probably time for a new oven.

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H!, its either you have a defective magnetron, hv transformer or a leaky capacitor.

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I would still suspect the top door switch. You would need to operate the switch to see if it clicks both ways and ultimately a test with a meter is required. If you don't have a meter, you can connect wires to a battery and a flashlight bulb, etc., and use that as a continuity tester. On the door switch, COM is common, NO is normally open, and NC (if present) is normally closed. 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 thew whole service manual (in sections) and order parts by entering your model number (without the dash) here: http://www3.sears.com If it's not the door switch, I would suspect the control circuit board (the one behind tghe keypad) and we repair these nationwide for only $39.95.

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