Question about Panasonic NN-T694SF Microwave Oven

1 Answer

Powers up but does not START cooking = Displays colon after you press START

HELP! I am having an issue with my Panasonic Inverter microwave. When you select a cook time then the START button it goes back to the colon. The colon is not blinking. It doesn't allow us to set the time either. When you plug it in it reads: "Welcome to Panasonic, REFER TO OPERATING INSTRUCTIONS BEFORE USE." It allows us to key in the time and all the other buttons appear to work, but as soon as you press the START key, it reverts back to the colon. Also, I tried press the Function Key (You can select 0 to 9 to select a function.) and the only one it allows me to select is the 0 - which is used for DEMO. It allowed me to turn off the DEMO. So the DEMO is set to OFF. Any suggestions? It's a pretty new microwave. It would be a shame to just toss it. :( Any suggestions would be greatly appreciated! Thanks in advance for you help! Kind Regards, zabamed ps. The only thing I have tried to do is disconnect it. Does anyone know how to reset the microwave? Maybe it needs to be RESET to it's original configuration?

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  • Zab Med Jan 02, 2007

    Thanks for your suggestion! I believe it was the circuit board and possibly the number pad. This weekend we opened up the puppy and cleaned-up the number pad and the circuit board with some q-tips dipped in alcohol. It works fine now! (I admit...not all the alcohol made it on to the circuit board ;)

    Thanks for responding!
    zabamed

    For future reference:
    The buttons did appear to function properly, since it would allow me to select any time, but when I pressed START it didn't start cooking.

  • Anonymous Mar 30, 2014

    living in a motel for next 3 months and need this thing to work or replace.

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  • Panasonic Master
  • 9,098 Answers

I would check your onwer's manual for any other specific reset instructions. Generally it reset by unplugging it from the wall for a few minutes. Does the microwave require you to set the time and date before it will work? Are all the keys on the keypad working or do they seem to? If not, you may have a bad, damp, or corroded keypad or control circuit board. I can follow up more on these if it seems like your problem. Please met me know what you find.

Posted on Jan 02, 2007

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Posted on Jan 02, 2017

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1 Answer

How to set the clock Model NN-SA651S


To set the clock, press Timer/Clock twice when the microwave is not in use. The colon between the hour and minutes should start to blink. Type the current time (12-hour clock) with the appropriate number key pads. To save the time and exit the clock set mode, press Timer/Clock once more. Note: if you take too long to begin typing the time, the microwave may exit the time set mode. In that case, the colon will stop blinking. None of the other features of the microwave will work when the colon is blinking.

This is shown on page 11 of the manual which is available on the Panasonic NN-SA651S support page: http://shop.panasonic.com/support-only/NN-SA651S.html . The direct link to the manual is currently ftp://ftp.panasonic.com/microwaveoven/om/nn-sa631_nn-sa651_nn-sa661_en_om.pdf .

I hope this helps.

Cindy Wells

Mar 16, 2018 | Microwave Ovens

1 Answer

How to reset time


To set the clock, press
"Clock"
once
or
"Timer/Clock"
twice
(depending
on your keypad)
.
The colon symbol (:) will flash.
Enter time of day.
The time appears
in the window; the colon continues
to flash.
Press
"Clock"
or
"Timer/Clock"
again - colon stops flashing; time of
day is set !

Nov 16, 2015 | Panasonic Microwave Ovens

1 Answer

After entering time to cook, then press start, Panasonic microwave Dimension 4 NN-CD987W .. Code appears H97


H95, H97, H98 or H99 mean that there's a problem with your inverter, magnetron, or digital programming circuit.

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

You can find an authorized Panasonic servicer here.

In Canada, 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.

Dec 01, 2012 | Microwave Ovens

2 Answers

Shuts off after approx 5 - 7 sec. some smoke


If it stops after 7 seconds, it has a problem with the inverter.

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 may be a loose connection in the wiring between the inverter, magnetron, and/or control board, or maybe one of those components has failed.

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

You can find an authorized Panasonic servicer here.

In Canada, you can find an authorized Panasonic servicer here.
If you prefer to replace the inverter yourself, you can find links to helpful exploded view diagrams and part ordering help here.

I recommend that you bookmark that link to your favorites.We're happy to help you with free advice and we'd appreciate your thoughtful rating of our answer.

May 15, 2010 | Panasonic NN-S954WF Microwave Oven

1 Answer

Doesn't matter on period of time, it stops after 3 second. After pressing "start", It makes noise three times and stops.


See if this describes what's happening:
  • Put in time, push start and unit runs for 2 seconds, relay clicks, unit goes off. Cook time on display goes off and clock time comes back. Bad upper interlock switch and charred connector
If so, see http://www.microwavedisplay.com/safety.txt , http://www.microwavedisplay.com/disassembly.txt and http://www.microwavedisplay.com/doorsw.txt

Otherwise, 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 may be a loose connection in the wiring between the inverter, magnetron, and/or control board, or maybe one of those components has failed.


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

You can find an authorized Panasonic servicer here.

In Canada, you can find an authorized Panasonic servicer here.

If yours is not a Panasonic, please reply back with your brand and model number so we can help you.

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

Aug 08, 2009 | Panasonic NN-S960WA Microwave Oven

1 Answer

Panasonic Model NN T964SF inverter microwave runs for less than 5 seconds and shuts off. Power control function does not work either. Pressing power control a number overrides cook time with power...


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.

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

Aug 02, 2008 | Microwave Ovens

1 Answer

I have Panasonic NN-S262. After i press the buton start it is working for 3-4 sec and stoped.


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.

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

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 and we appreciate your thoughtful rating of our answer.

Jul 06, 2008 | Panasonic Microwave Ovens

7 Answers

Microwave oven (nn-sd997s) stuck in DEMO mode


Pressing "timer/clock" button 4 times turns on and off demo mode.

Apr 26, 2008 | Microwave Ovens

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