Question about Panasonic NN-T888S Convection/Microwave Oven

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Dead microwave Panasonic Genius Dimension 4 My microwave just stopped working the other day. Nothing is on it's just dead. Before it died when I was cooking vegies it would sometimes stop because it got to hot and when it cooled down it was fine again. Now it is just totally dead. Is it worth fixing? It is nine years old.

Posted by bpeck on

  • 2 more comments 
  • cockatoo94 Sep 02, 2008

    Model no. NN - 9850 stopped working, checked mains fuse...blown. Replaced fuse but blows again.

  • jm52 Nov 30, 2008

    I have a whirlpool microwave. It has just s0pped cooking. Turntable works, light works just won't cook.

    How do I check the mgnetron?

    Thank you

  • Anonymous Mar 17, 2014

    wharfedale ne 2303 I have a National Dimension 4 Genius (1985 or 1986) that was working fine until it made a screeching sound during the last use in early 2013) I stopped the oven immediately and did not dare to use it since. It has never been serviced before. I really like this oven. Can it be repaired? Is it worth repairing. Usage is low for this oven. Thanks.

  • Anonymous Mar 17, 2014

    wharfedale ne 2303 I have a National Dimension 4 Genius (1985 or 1986) that was working fine until it made a screeching sound during the last use in early 2013) I stopped the oven immediately and did not dare to use it since. It has never been serviced before. I really like this oven. Can it be repaired? Is it worth repairing. Usage is low for this oven. Thanks.

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Devabhakthuni Venkateswara Rao

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Check mains fuse and check control circuit and magnetron. and diodes capacitor  high voltage related circuit. small part also gone microwaveoven doesnot works, first check oven and conform which part was spoiled, after that this is worth or not old ovens good compaare to new ones...

Posted on Oct 28, 2007

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ERROR CODE H97 ON PANASONIC MICROWAVE NNCD997S (Dimension 4 The Genius)


There is a problem with the magnetron or power supply to the magnetron.
Take it to an authorised Panasonic Domestic Appliance repairer for service.

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My Panasonic Microwave Dimension 4 Convection is showing FFFF in the time display when I try to use it. What does this mean?


https://www.manualslib.com/manual/652153/Panasonic-Dimension4-Nn-C988w.html

FFFF is not mentioned in the user manual, but there may be some helpful information or contact information in it.

PANASONIC Dimension4 NN C988W Operating Manual And Cook Book


This is not certain, but it may be a part that is expensive to replace according to this other web site for a similar model Panasonic oven. That person said their microwave was still working.

https://www.justanswer.com/appliance/6045n-good-day-panasonic-dimension-iii-microwave-convection.html

---------------------------------------------------------------------------------
Good day, I have a Panasonic Dimension III Microwave/Convection Oven 1983
Model NE-9910A.

I went to use it today and when I entered to nuk my coffee a FFFF display appeared where the clock normally appears. I went and found my operating instruction booklet and it indicated to "stop/reset" which I did. Next it indicates to contact a Panasonic Servicecenter. Can you help me out? ps. It still works great!!!!!

Answered in 1 minute
12/24/2011

FFFF means that your display control board has an internal short. The only way to fix the problem is to replace the display control board which is no longer available. If you really wanted to fix the microwave you'd need to remove the display board and mail it to a place like Appliancetimers.com to have the part refurbished. The cost to have the part repaired is usually about $200-250 or so.

---------------------------------------------------------- Good day have Panasonic Dimension III Microwave Convection

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An internal fuse may have blown or the magnetron may have failed

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Its a child lock if your suffering with the same thing as us,My six year old brother managed to lock the microwave,all it displayed was a frustrating 'LOCK' message.to fix it i just hit the 'stop/reset' button three times

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I have a Panasonic Dimension 4 Microwave/Convection "The Genius". The microwave stopped working? Can you advise?


So we can help you, please post a NEW FixYa inquiry which includes your full model number from the tag on the unit, and the answer to these questions:

Is it dead? (meaning no display, no beeps when you press a pad on the keypad and the inside light does not come on when you open the door)

Is it running but not heating?

Any usual noises?

Does it shut off after a few seconds when you try to cook with it?

Of so, exactly how many seconds?

Are there any error codes on the display?

Also, if you;re not in the US, which country are you in?

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Our Panasonic Genius 1200w microwave stopped working all of a sudden. It's completely dead - even the front panel. Is it worth fixing?


It could be just the fuse and fixed for a couple bucks. Only way to know is open it up and check it. Eric

Sep 03, 2009 | Panasonic NN-H504WF Microwave Oven

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My Panasonic The Genius microwave just stopped working not getting any power to display. Wondering if it is the fuse and where that would be located.


HI, if this unit is totally dead, this may be a power inverter issue. there is a fuse located on this board inside the unit. you will need to gain access to this board and fuse by removing the outer cover. there should be a few screws on the outside of the microwave to remove.

Check the In-line fuse for its value. if the fuse is good, replace the power unit(inverter board)

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Panasonic dimension 4 microwave/convection oven


Does this unit have a turntable? If so does it turn when on?

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Panasonic Dimension 4 microwave model NN-C703BBPQ not working. Display is not illuminated as if fuse has blown. Have changed fuse in plug, but still no visible sign of life. Anything obvious that might...


A microwave can be dead for many reasons.

It may be the fuse, which is usually located on the floor of the oven behind the control panel or between the door switches.

If the fuse is good, it may be an open thermostat or thermal cutout (TCO) / thermal fuse on or near the magnetron or on top of the cavity / body of the oven.

If it goes dead for a while during or after cooking then comes back on, the magnetron is probably overheating and causing the magnetron thermostat to open.

Then when it cools, it closes the circuit and allows power through again.

When checking thermostats, if it has a hood fan thermostat, that should read open, as opposed to the others, which should read closed.

If it went dead almost immediately after pressing the Start pad, that's usually a shorted high-voltage capacitor.

If it went dead a few seconds after pressing the Start pad, that's usually a failing high-voltage transformer.

If it goes dead or blows the breaker (or GFI) when you plug it in or open or close the door, then there's a problem with a door switch or door switch mount.

If it's intermittent or random, it may be a bad connection, usually on the control board or a loose fuse holder, or even an intermittent fuse.

You should do a continuity test on the fuse while it's in the holder (with the microwave unplugged, of course) then turn the fuse by hand or take it out and put it back in, then test it again.

If you remove the fuse, then press the meter leads against the ends, it can allow internal contact to be made and make a bad fuse appear to be good.

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

Jul 29, 2008 | Panasonic Microwave Ovens

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