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Anonymous Posted on Dec 10, 2017

Knocking noise in Panasonic Model NN-S969BA Manufactured 1999

Seems to be working fine but intermittent knocking noise while cooking. Noticed about 2 weeks ago that top got very hot while cooking a chicken pot pie for 10 minutes. Top usually doesn't get hot. Thought it might indicate problem with fan not venting properly. Noise seems to be mostly at start of cook time.

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Paul Woodward

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  • Expert 200 Answers
  • Posted on Dec 21, 2017
Paul Woodward
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Open it and check screws. anything that vibrates will sooner or later loosen internal screws. maybe put a locking ring on it if u find it
ManualsLib Makes it easy to find manuals online
serach here for service manual .

5 Related Answers

MicrowaveSvc

William Miller

  • 9179 Answers
  • Posted on Jul 19, 2008

SOURCE: Panasonic NN- A712 combination Microwave 1000w - Switches off after 20 seconds

The 22 seconds is the giveaway.

In most cases, this is a problem with the inverter or a bad magnetron.

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 and we'd appreciate your thoughtful rating of our answer.

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MicrowaveSvc

William Miller

  • 9179 Answers
  • Posted on Aug 18, 2008

SOURCE: Panasonic NN-CS596S Convection Combi Steam Oven

The first thing I would suggest is a hard reset. Unplug the unit for a minute or so. Then plug it back in, set the clock and try again.

Let us know if the hard reset does not fix it.

If it stops at 16 seconds and is a sensor model, it probably has a defective humidity sensor.

If it stops after 22 seconds, that means the controller has detected a problem, usually a problem with the inverter or a bad magnetron.

If you do indeed have a problem, Since it's less than one year old, it should be fully covered under warranty. I'd suggest contacting the manufacturer to get it fixed free.

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.

MicrowaveSvc

William Miller

  • 9179 Answers
  • Posted on Nov 24, 2008

SOURCE: Micro Wave shuts down

If it stops after 22 seconds, that means the controller has detected a problem, usually a problem with the inverter or a bad magnetron.

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

You can find an authorized Panasonic servicer here.

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

Anonymous

  • 1 Answer
  • Posted on Jan 07, 2009

SOURCE: Panasonic NN-S262SF stops cooking after 3 seconds

inverter problem the transistor 1M30D is shorted

Anonymous

  • 87 Answers
  • Posted on Feb 16, 2009

SOURCE: Panasonic Microwave NN-C980-B buzzing noise but it still works.

That's good that it worked for you! Ya it's kind of hard to find out where it's coming from when you don't want to get close to it. As long as it's working and the fan is running to keep it cool, you'll just have to se what happens!

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