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Panasonic Viera TH-42PX80U Plasma TV - Page 7 Questions & Answers
There's a light blue form in the middle of the screen and a yellow dot in the bottom right corner of my panasonic plasma tv. Can I fix it?
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.
TH-42PZ80U Panasonic Plasma, red light flashes 10 times
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.
How to get the cover off remote control
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.
Just bought a 42" panasonic
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
LG50PQ30
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?
What malfunction of the Panasonic power supply ETX2MM702MFN?
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.
42
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
No power
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
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