Question about Panasonic TH-42PC77U TV

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Panasonic TH-42PV7M PLASMA VIERRA I HAVE BEEN RECENTLY HAVING PROBLEM WITH MY PLASMA TV. WHEN I TURN IT ON, AFTER 2 SECONDS IT SHUTS OFF AND GOES TO STAND BY MODE. AND THAN IT DOES NOT TURN ON BY THE REMOTE CONTROL AT ALL, IF I UNPLUG FROM THE POWER PLUG AND PUT IT BACK AFTER SOME TIME IT TURNS ON BUT THAN AGAIN SHUTS OFF AFTER 2 SECONDS. PLEASE HELP ME WITH THIS PROBLEM

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5 Suggested Answers

SOURCE: Wall mounting Panasonic Viera 32" tv

Took me a while to find this. Remove the two lowest screw, holding on the plastic back, in the centre and it drops out.  -- Andrew

Posted on Apr 27, 2008

  • 1 Answer

SOURCE: Panasonic Viera TH-42PV7HS Plasma keeps shutting down

hi there, have the same kind of problem twice so far after was bought for me as x-mas present (although my viera isnt plasma, its an LCD TX-32LMD70A)..

I Pulled out the mains plug for about 10-20 seconds and then plugged back in (power button at top was pushed in, in the on position, so when the power was on, the tv just goes straight on). It then worked.

i would however like to know why this happens ( i really hope this isnt a hardware problem, as like many others... its only months old!!)

hope this helps

Posted on Apr 27, 2008

SOURCE: Panasonic TH-50PZ Plasma TV won't come on.

I had the same issue twice with a TH 42PWD5. turns out it was my UPS that was killing the switching power supply. Warranty covered it but when I removed the UPS not a single issue in 3 years. 

Posted on Jul 01, 2008

  • 8457 Answers

SOURCE: i have a plasma panasonic viera TH-42PV60A stand

Not power supply,it the backlight video board it dead.

Posted on Nov 23, 2009

Testimonial: "cool thanks alot"

tvhelp-Dave
  • 178 Answers

SOURCE: 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.

Posted on May 10, 2010

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We have a 50"panasonic vierra


Tv have problems with it 2 backlight buffer boards,like to help the tv Plasma screen panel to stay consistantly lite with same brightness.Take ur tv back where u bough it.Trade it in for another tv this tv have deffective and dying backlight buffer boards.

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The pixels in the screen are commanded by a buffer board . This board connects to the screen with the help of a wide flat connector - in your case this command circuit appears to be faulty: either the buffer circuit is failing and the entire buffer board will have to be replaced ($250 part and labor from a pro) or the connection itself appears to be slightly out of line so when heated the contact is lost and the pixels get stuck (in that case the tv will have to be completely dismantled and all the contacts to the plasma panel reseated - $200 in labor).
Ask a quote around and select the cheapest repair shop you can find.

Apr 17, 2011 | Panasonic Viera TH-42PX80U Plasma TV

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I have 11 blinking lights after the tv is powered on. picture comes on for 3 seconds then goes out. why?


May be a cooling fan failure, At back of tv there are 5 coolling fans ( accross the top) if 1 fails the tv power supply shuts down giving 11blinks, had this on a tv recently.
pete

Nov 17, 2010 | Panasonic Viera TH-42PZ80U Plasma TV

1 Answer

I have a panasonic plasma tv. Model #


I don't know but I'm having a similar problem. I have a plasma
TH-50PZ77U. It will run for a while and then shuts off. Also, the volume goes up and up and then it shuts off at times. Like I have a ghost here. I had both of my sat. recievers replaced. It seems to get worse over time with shut down. I called panasonic and they had no info and denied this was an issue but I beg to differ from my research here online. It's only a few years and we paid lots of $$$. They gave me a # for service 1 hour away!

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1 Answer

Panasonic TH-42PX75U Blue Screen


This could be a reception problem of the cable transmission or the cable box if used. Are you using cable or SAT box. Tv goes to blue screen if signal is weak automatically.

Dec 03, 2009 | Panasonic TH-42PX75U 42 in. Plasma...

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