Panasonic plasma th-42pz85b

[vinceroger69]

Hi guys just turned on my own tv was fine earlier and picture now messed up like this in the following pictures any idea what to check guys thanks

[Andrew F. Ali]

Re: Panasonic plasma th-42pz85b

Looking similar to the solarized picture you'd get with a bad T-CON Bd on a LCD TV. In the LCD TVs and I know this is a PLASMA TV in the service menu you would be able to access a setting called Option Byte and change the Panel code from a list. I'm not sure if this TV carries this option. I've never come across this before in my 15yrs of repairing plasmas. Could this have something to do with the SET-UP and SET DOWN adjustments on the SC Bd? Are your Vs, Vda, Vsc Ve voltages on spec or close enough?

[dick_barton]

Re: Panasonic plasma th-42pz85b

+1 Looks like the best starting point is check the voltages and see if one has gone awal.

[vinceroger69]

Re: Panasonic plasma th-42pz85b

Ive just took the back of and cleaned the lead on the control board its looks like a lvds lead? i can only see the one end it was very loose in the connector so ive just sprayed with contact cleaner and air duster and reseated that connector end its now turned on fine pictures ok again so just testing it now, but maybe its the other end of that lead so may need to take out control board to find that end and clean it too.

[Moreno83]

Re: Panasonic plasma th-42pz85b

Funny how that red lvds lead gets loose? Probably not seated correctly in the first place....

This is a very well build tv that lasts a long time ( besides the 10uf cap )..

[vinceroger69]

Re: Panasonic plasma th-42pz85b

Yes red lead i guess you have seen this before? is the other end easy to get too? and yes i got this set free in 2013 non working replaced the two 10uf caps been fine until today

Edit! well ive just put the tv back together and will leave it on test but cleaning the control board end of that lead does seem too of fixed the issue.

[Andrew F. Ali]

Re: Panasonic plasma th-42pz85b

Sometimes as professionals we tend to overlook the simple solutioins and dive headlong first into the technical stuff. Good Fix. Perhaps you could look at the other connectors too and clean and reseat them as well.

[dick_barton]

Re: Panasonic plasma th-42pz85b

I wish all repairs were that simple

[vinceroger69]

Re: Panasonic plasma th-42pz85b

I wish all repairs were that simple

me too, it took me longer to remove all the screws than too clean the cable and re seat it, yes i maybe should of cleaned more connectors as andrew says, but whats thats saying, if its working leave it alone lol knowing my luck today something will break.

[Moreno83]

Re: Panasonic plasma th-42pz85b

Yes red lead i guess you have seen this before? is the other end easy to get too? and yes i got this set free in 2013 non working replaced the two 10uf caps been fine until today

Edit! well ive just put the tv back together and will leave it on test but cleaning the control board end of that lead does seem too of fixed the issue.

No i have not seen that before but you got this tv for free because it was not working. The last owner probably removed the cables and not reseated the red cable correctly.
The small board is behind the mainboard but you need to remove just the screws from the mainboard housing.

It looks like this:

http://www.shopjimmy.com/panasonic-t...js-d-board.htm

[vinceroger69]

Re: Panasonic plasma th-42pz85b

No i have not seen that before but you got this tv for free because it was not working. The last owner probably removed the cables and not reseated the red cable correctly.
The small board is behind the mainboard but you need to remove just the screws from the mainboard housing.

It looks like this:

http://www.shopjimmy.com/panasonic-t...js-d-board.htm

Thanks if it does play up again i will clean the other end of the cable touch wood it seems ok at the minute

[vinceroger69]

Re: Panasonic plasma th-42pz85b

Just too update the thread the tv seems fine now no more messed up picture issues it must have been that loose/dirty lvds lead wish all repairs was this easy but hey makes a change from replacing failed leds on friends/customers tvs .

[Andrew F. Ali]

Re: Panasonic plasma th-42pz85b

Agreed..