Panasonic Plasma TX-P42G20B vertical bar

[ezquerro]

I have a Panasonic TX-P42G20B 3 yers old with a vertical line, appears in the center of the display:
http://www.1x2.talktalk.net/l3.jpg

anybody know how to fix it?
what part is faulty ? how much cost? and where I can buy it?

[tom66]

Re: Panasonic Plasma TX-P42G20B vertical bar

Take the back cover off the TV and post a clear photo. Likely just a loose cable. If not, could be a bad C board. Should be fixable. I've heard this is a fairly common issue with these panels.

[ezquerro]

Re: Panasonic Plasma TX-P42G20B vertical bar

I think the flex is not loose because is fited by 2 screws, I will open back cover again on saturday and make a clear photo.
@tom66 where I can buy a C-board for my tv ?

the vertical bar is fluctuating, more photos:
http://www.1x2.talktalk.net/l1.jpg
http://www.1x2.talktalk.net/l2.jpg
http://www.1x2.talktalk.net/l3.jpg
http://www.1x2.talktalk.net/l4.jpg
http://www.1x2.talktalk.net/l5.jpg
http://www.1x2.talktalk.net/l6.jpg
http://www.1x2.talktalk.net/l7.jpg

[tom66]

Re: Panasonic Plasma TX-P42G20B vertical bar

C board can be found on eBay, FlatTVParts, parts4u.me.uk, Emos' used TV spares, etc. Just match up TNPA or TNPH number including suffix code, e.g. "AG", "AH", if one is present.

[ezquerro]

Re: Panasonic Plasma TX-P42G20B vertical bar

thanks tom66
I have checked on ebay but can't find a new one , all used
it's correct part numer for my faulty c-board? TNPA5094
I would like check my c-board for shorting but i don't know how do it, do You have any troubleshooting ?

[tom66]

Re: Panasonic Plasma TX-P42G20B vertical bar

You won't find a new one. They are all used from scrapped TVs. Panasonic new one would be 3 digits+, if they even sell it any more.

[ezquerro]

Re: Panasonic Plasma TX-P42G20B vertical bar

I noticed something, when disconnecting flex and connecting again there is no line on tv
but appear again after 30 minuts. The metal frame on flex starts heats up, I'v checked others one and is no heating like that.
Tom66 are you sure that c-board is a defective ? not flex ?

http://www.1x2.talktalk.net/heats.jpg

[tom66]

Re: Panasonic Plasma TX-P42G20B vertical bar

It can possibly be that ribbon. There is unfortunately no way of replacing it.

NOTE: You MUST have the screws in place when powering it up or further damage could occur.

C board looks cheap, I'd take a chance on that. If not, it is the panel, sadly...

[ezquerro]

Re: Panasonic Plasma TX-P42G20B vertical bar

thanks Tom66 , I just ordered c-board

[ezquerro]

Re: Panasonic Plasma TX-P42G20B vertical bar

I just replaced c-board, works fine only for 10 minutes and line appeared again
after one hour line disappeared and appeared again after 20 minutes
any ideas ??

[Alastair E]

Re: Panasonic Plasma TX-P42G20B vertical bar

Prob the COF chip on that flex connector. Part of panel, sadly unreplaceable as its part of the panel assay.

[ezquerro]

Re: Panasonic Plasma TX-P42G20B vertical bar

it is possible to check that chip is faulty?

[Alastair E]

Re: Panasonic Plasma TX-P42G20B vertical bar

Apart from what you have already done--ie, replace everything else, no--I don't think so....

I scrapped a Pan a few weeks ago with the same fault, although with mine--it was permanent.

[ezquerro]

Re: Panasonic Plasma TX-P42G20B vertical bar

now my tv back to normal but I dkon't know for how long...

made a video:
https://www.youtube.com/watch?v=Zzfe...ature=youtu.be