Question about Panasonic NN-T888S Convection/Microwave Oven

1 Answer

Hello. My Panasonic NN-K153W microwave owen keypad does not responding, beside three keys- stop, clock and the one with symbol of microwave in the left upper corner. I can not setup the clock because no other keys is working. A few days ago 3 keys for setting up time of cooking sometimes were working (H, m, seconds), sometimes not but now stopped just like that. What could be the main reasons for that ? Is there any reset possible ?

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Other than a complete power off, I know of no reset switch on any microwave ovens. I own a panasonic myself.

I would leave it unplugged for a while, at least 15 minutes or so, and leave the door open, to turn on the inside light (which won't light if unplugged but) so it might discharge any capacitors holding residual power to the circuit.

If it wasn't power protected, it could have taken a hit.

If it is plugged into a surge protector, they wear out. You might be able to make a claim on it through the surge protector manufacturer, if it has a warranty, and you have receipt. Surge protectors do wear out, and most unless they're the cheapest, will have a warranty that covers equipment. The wear out because the varistor which provides the voltage clamping during a surge become conditioned. Initially they clamp around 150V to 180V, but as they age from repeated surges, their clamping voltage rises until it no longer protects the equipment. Often you can tell, if the surge protector LED is blinking or intermittent, the company will replace the surge device if you make a claim on the protector, if it fails while in use, they usually cover the equipment, unless the warranty has run out, but many give lifetime warranties.

The reason some keys may have been working is because after a small surge, the logic states can go indeterminate, which means some work, and some won't. If it's not damaged, a full power off for some time may restore it to initial conditions.

Hope this helps. They should build in surge protection, and I think mind does have some; but, if not, I hope it's in warranty for you.

Posted on Jul 04, 2017

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Posted on Jan 02, 2017

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MicrowaveSvc
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SOURCE: Microwave shuts off after 3 seconds

Although your model number doesn't seem to show up, the NNS950-series units are powered by an high-voltage inverter. And yours has failed. While an inverter (switched-mode power supply) is more efficient from a power consumption standpoint, it is more complex, thus more statistically prone to fail. These should only be examined and worked on by someone who has the necessary technical qualifications. Seriously. Often the machine-soldered connections in a microwave inverter are too weak, so they eventually fail, especially if heat is high in the area. They sometimes fail catastrophically. When not catastrophically damaged, you may hear clicking or squealing and may smell an electrical odor, which is sometimes obscured by the cooling fan. Sometimes a whole new inverter is cheaper than the time and labor required to fix the old one. If a technician is willing and able to troubleshoot and repair the inverter to component level, it will may be expensive, but may be worth it, especially if he or she will resolder and reinforce connections as needed as part of a thorough repair. That could easily make your inverter beter than a new one! You might be able to get some verbal estimates if you call Panasonic-authorized appliance / microwave repair shops and ask then specifically about inverter component-level repair and simple inverter replacement costs for your exact model number.

Posted on Dec 28, 2006

MicrowaveSvc
  • 9085 Answers

SOURCE: Comination Microwave

Generally, the most common causes of a failure to heat are:

- bad door switches or door switch mounts
- loose connection at the magnetron
- problem or loose connection on the control unit circuit board
- bad magnetron or other high voltage part
I would think it's not a door switch problem since the oven and grill work.

I'd say this is a problem with the inverter or a bad magnetron.

More importantly, 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. You can find one here:

http://www2.panasonic.com/webapp/wcs/stores/servlet/vServiceLocator?storeId=15001

We're happy to help and we appreciate your thoughtful rating of our answer.

Posted on Nov 28, 2007

  • 1 Answer

SOURCE: microwave panasonic model nn 6358 about 10 years old

NO HEAT BUT OTHER WISE NOMAL OPERATION NO MICRO OUT PUT

Posted on Nov 07, 2008

  • 1 Answer

SOURCE: Panasonic NN-S262SF stops cooking after 3 seconds

inverter problem the transistor 1M30D is shorted

Posted on Jan 07, 2009

MicrowaveSvc
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SOURCE: Setting time on Panasonic NN-CD748B microwave

Panasonic's UK site is here and you can choose Support, then search for spares, servicers, downloads and contact info.

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

Posted on Jan 09, 2009

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1 Answer

How do I set the clock on a Panasonic microwave nn-e271wm


To set the clock, you need to press Timer/Clock twice. Then press the 10 Min keypad several times until you get to the correct hour. Then press the 1 Min keypad as needed to get to the closest 10 minute period below the current time. Finally press the 10 Sec keypad several times to reach the current time. Then press Timer/Clock once to exit the time set feature.

Panasonic has the manual for the NN-E271WM on their downloads page: http://www.panasonic.eu/Downloads/en_GB/popup.html . Enter the model number and then click View. You will need to accept the Panasonic Terms Of Use and click View again. The direct link to the manual is currently http://tda.panasonic-europe-service.com/docs/2z5845f124z3z39cabz656ez706466z25z9709ff8b3ba329b0c218b9bf248a6442e93022b3/tsn3/data/ALL/NNE281BMBPQ/OI/912715/NN-E271WME281BME281MM.pdf . See page 21 in the manual (23 in the PDF) to see the procedure.

I hope this helps.

Cindy Wells

Dec 05, 2016 | Panasonic 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

Setting the clock on a microwave what is the last action after setting the time. Everything I've tried results in the error message coming up.


According to the manual this is how to set clock.


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.

If you need the manual it is on link below.

http://service.us.panasonic.com/OPERMANPDF/NNH624-SET%20UP.PDF

Good Luck

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Hello Two options to try: a) Press the Clock / Timer button 3 times b) Unplug, wait a few seconds, then re-plug to power up with the factory settings. You will need to reset your clock and any favourite settings.
This should work with all Panasonic Microwave models.
Good luck

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I have a panasonic range microwave oven model NN-H264/S254 clock cannot be set. (It use to work but no longer can be set)


Sounds like you disabled the clock function. If you do not have the user manual, you can get a copy at this website and use the function keys to reactivate and set the clock...

http://safemanuals.com/user-guide-instructions-owner-manual/PANASONIC/NN-H264-_E

I belive the information you seek is on page 12 of the manual.
Hope that helps...

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1 Answer

I have just been given a Panasonic microwave (NN-E255W)but have no idea how to program the clock, no manual either


On most microwaves, to program the clock you press the button marked, "Clock," or "Timer/Clock," or something similar. You then enter the time on the keypad by pressing just the numbers for the current time, then press the clock button again.

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