20 Most Recent Panasonic Viera TH-42PX80U Plasma TV - Page 7 Questions & Answers


No this model is to old.

Panasonic Viera... | Answered on Jun 20, 2012


Check whether the mute function is set to On. If not, check its speaker and audio output card.

Panasonic Viera... | Answered on Jun 14, 2012


Before making voltage tests etc---Unplug the set, a box or receiver if in line----leave them disconnected from power for a while and plug back--allows the unit/s to try to reboot.

If you have OSD it if the set could be the main board or even the power board causing this.

Panasonic Viera... | Answered on Jun 12, 2012


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678 254 278 154 242 368 191 302 128 544 241 065 395
379 389 103 576 136 650 278 136 678 254 065 650

Panasonic Viera... | Answered on Jun 11, 2012


Just called Panasonic to inform them I had the same problem. I was told by the rep that this is not an issue that they will address as this is a third party site and anyone can post whatever they feel. She had a very condescending attitude and said since their site didn't have any info on this trouble they would not stand behind their product. Panasonic has lost a customer and I will be sure to tell everyone that will listen to stay away from that company. This is the second major issue I have had with this TV in the 4 yrs I have owned it. The rep said what she could do for me wa to have one of their sales people call and offer me a "loyalty discount"........yea ok.

Panasonic Viera... | Answered on Jun 07, 2012


Panasonic said "A" board,
A board SOS Detect (Explanation)
10 Blinks SOS: The voltage regulators IC5400 and IC5401 in the A board generate SUB9V and SUB5V. The 9V and 5V from these ICs are monitored by IC1100. Any abnormality on the SUB9V or SUB5V lines, triggers the shutdown circuit and the MPU shuts down the unit. The power LED blinks 10 times.

But need to measure the connection SC2, if it short, it will be the SC board.

The knowledge obtain from: Real case of repair by myself.
Information from Panasonic training manual.

Panasonic Viera... | Answered on May 22, 2012


Most of these snap together in the middle all the way around.

IF YOU GET it apart wash the mat with all the buttons with dishsoap and rinse---use no chemicals to clean it===consists of circuit board, mat with all the buttons, front and rear covers and batteries.

Usually when one button or a few cease to function something got spilled and got under the rubber like mat.

Let me know if questions--have fixed several hundred remotes including one I dropped into a glass of Iced Tea.

Panasonic Viera... | Answered on May 14, 2012


On your remote, click menu, then setup, then external devices, then input labels. Here is a link for manual:


http://www2.panasonic.com/consumer-electronics/support/Televisions/Plasma-HDTVs/model.TH-42PX80U

Panasonic Viera... | Answered on Apr 17, 2012


you have come to the wrong place for an answer to this question=answer would be to pay your bill and have them turn service back on.

Panasonic Viera... | Answered on Apr 11, 2012


you have come to the wrong place for an answer to this question=answer would be to pay your bill and have them turn service back on.

Panasonic Viera... | Answered on Apr 11, 2012


The set uses two boards to drive the screen --one for each half or side.

Different names are used like sustain or in LCD sets inverter.

Panasonic Viera... | Answered on Apr 03, 2012


in menu speakers switched on or off?

if you put your ear to the speaker do you hear anything?

Is set connected to box of some kind for audio and video signal?

Panasonic Viera... | Answered on Mar 14, 2012


CAPACITORS ARE THE MOST COMMON PROBLEMS WITH PANASONIC POWER SUPPLIES. THESE CAPACITORS EITHER BLOW UP ,CRACK OR BULGE ON THE TOP... IF YOU SEE ANY OF THESE REPLACE THEM... YOU CAN PUT A LITTLE HIGHER VOLTAGE TO KEEP THEM FROM FAILING BUT DO NOT CHANGE THEIR VALUETHIS IS THE CAUSE FOR NO PICTURE ONLY A BLINKING LIGHT ON YOUR TV BUT NOTHING ELSE.

Panasonic Viera... | Answered on Mar 01, 2012


YOU MAY WANT TO CHECK YOUR HDMI TO MAKE SURE IT IS PICKING UP YOUR CABLE SIGNAL. TO KNOW MORE, IS THE SCREEN DARK, LIKE OFF, OR WHITE SCREEN WITH LIGHT...IT VARIES...OR DAMAGED PIXELS.. TO GET A SPECIFIC PROBLEM SOLUTION YOU CAN GET AT WWW.BESTDIRECTORYSOLUTIONS.COM

Panasonic Viera... | Answered on Mar 01, 2012


Hello,
The issue you describe is consistent with a power supply board issue. This is the board where the AC goes to. This problem may have occurred as a result of irregular power supply, or excess power supply or power surge.
The TV is receiving current but cannot circulate or transfer the current to other necessary part of the TV because of the defective power supply board. You might be lucky it's just a blow fuse. Also a defective transformer can cause your TV not to power on.
All these can be checked on the power supply board.
But more often bad capacitors causes problem on the power supply board. I do not think the power board needs replacement, rather those defective capacitors is causing this issue. Open unit up and take a look at the power supply board.You will probably see one or more electrolytic filter capacitors that are bulged up in the top-not perfectly flat like the others.
The value of these capacitors will be different, most likely they will be somewhere around-820 to 2200uF/25 V( or /10V sometimes)
You can replace them with same values but I would recommend the voltage rating to be higher(like 35V for an original 25V) for reliability purposes.
What happens is,these bulged top capacitors will cause a low and unfiltered DC voltage=main board will malfunction(the relay will keep clicking until the caps are holding enough charge to bring the voltage up over a threshold point).
You can buy these capacitors at any Fry's or Radioshack store or you can order them online at vendors like "mcmelectronics.com"(look for electrolytic capacitors). After replacing these capacitor(capacitors) most likely the normal operation will be restored. Or you can by a refurbished complete power board to save you some stress.
Note: There may be also some other causes for this symptom ,like a defective T con board ,or main board,but the bulged top capacitors are the most common cause for this issue.
If you don't know about TV repairers, take the TV to the nearest repairman to fix the fault for you. Also, note that TV stores a lot of current, so wait a while before opening the TV back cover.
I hope this helps.
Good luck

Panasonic Viera... | Answered on Feb 24, 2012

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