Question about Panasonic Microwave Ovens

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It no longer runs the full time cutting out after 30secs which ever programme

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  • Panasonic Master
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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 and we appreciate your thoughtful rating of our answer.

Posted on Jul 13, 2008

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3 Answers

My gammon joint is 1.194 kg in weight how long do I cook in the oven for


Based on a 1200 watt microwave. Increase time for less wattage devices.
Place in a large casserole dish with lid and cover with water.
Heat on High (full power) for 15 minutes then 15 to 20 minutes per 450g at Medium power.
Allow to stand before serving as always.

Feb 06, 2015 | In Microwave Ovens

1 Answer

Powers off immediately after starting


My immediate reaction would be to cut your losses and buy a new unit as sooner or later you will run into a part that is no longer available.

Nov 03, 2012 | Whirlpool Microwave Ovens

1 Answer

Oven only runs for 5 seconds no matter the time programmed in. the power level can be set and it does not matter, the oven runs for 5 seconds and shuts off.


I would need your full model number to help you best, but I'm guessing that at least it's a Panasonic?

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://031d26d.namesecurehost.com/mwd/safety.txt
http://031d26d.namesecurehost.com/mwd/disassembly.txt
http://031d26d.namesecurehost.com/mwd/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 create a new post 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.

Oct 10, 2011 | Panasonic NN-H264 Microwave Oven

2 Answers

I select High/Med/Low, set time say 1 - 2 mins microwave starts up light comes on, fan comes on, table turns...but after 20-30secs table stops, light goes off, disply reverts to clock time, fan runs for...


If there is no heating please do not switch on unless you have confirmed the fault. It is possible that the Magnetron is faulty, the temperature cut off is faulty or the main capacitor is short. It is also quite possible that insect can get into the oven and create soft spots. When you switch on these will create a short and make the voltage jump and in the long run damage the magnetron.
So Remove cover after disconnecting , check for dirt/moisture in the cabin, if so wipe clean and dry, check the magnetron and area clean and use an jet air to clean off.
Make sure that the program controller is working if not check power - step down supply, the pads are responding- if not faulty pads- or the door switches, if contact is not through the microwave will not work.

Now keeping clear of the microwave, switch on, use a cup of water inside to test.
If you notice any sparks shut off as the magnetron or the main HT capacitor can be faulty. replace with same type. In this case it seems that the program controller board has errors specially if the oven heats and shuts off. remove the board, clean and reset.
If there is heating without any issues, you can use the microwave safely

May 16, 2011 | Microwave Ovens

1 Answer

The oven doesn't heat when I put an item in and turns off after 30secs. I've re programed it based on the instruction manual but no success. Any ideas of what could be wrong? thks


It sounds like the magnetron may have either failed or is not being supplied with the extremely high voltage required to run it.

YOUR SAFETY IS PARAMOUNT

This is a job for a professional and must not be attempted by the novice.
Hope that helps.



Feb 13, 2011 | Panasonic NN-S262SF Microwave Oven

1 Answer

I have a Panasonic microwave convection that runs for 2 or 3 seconds, then cuts off. It doesn't matter what setting or length of time you program into it, it will run a couple of seconds and shut down. Is...


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://207.234.249.73/mwd/safety.txt , http://207.234.249.73/mwd/disassembly.txt and http://207.234.249.73/mwd/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.

That 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.

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

Sep 08, 2010 | Panasonic NN-C994S Convection/Microwave...

1 Answer

My panasonic nna770s combi microwave cuts out after 3 seconds during this time the turntable doesn't turn, any ideas?


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 you;'re not in the US or Canada, see the support or service links at www.panasonic.net.

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

Sep 10, 2009 | Panasonic Microwave Ovens

1 Answer

No longer turns


on the bottom of most units you can get to the turntable motor with some side cutters,cut the joins. pull the little flap off and there is your motor run a current through it to see if it turns(how much will say on the motor) if not turning there is your problem

Oct 06, 2008 | GE Spacemaker JVM1640SJ Microwave Oven

2 Answers

Microwave cycles off


Does this happen just at the full power microwave cook setting?

Have you tried defrosting and doe sit do it on this setting? Does it run any longer in defrost mode?

Dec 02, 2007 | Microwave Ovens

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