Panasonic TC-P55VT25 Vertical Green Line

[Ryan81]

My Panasonic plasma has developed (suddenly) a thin green line, one pixel wide, extending from the bottom of the screen straight up to the middle, where it ends. I attached a pic of the line, though it's a bit hard to see.

Any ideas what might be causing this?

Thanks,
Ryan

[Alastair E]

Re: Panasonic TC-P55VT25 Vertical Green Line

Probably the panel itself or the COF chip/Tab driving that section of panel.

Unrepairable.

[Ryan81]

Re: Panasonic TC-P55VT25 Vertical Green Line

OK... Hell of a thing happened, turned it on last night and the line is gone. Ran for a good 6 hours last night and another 5 so far today, no sign of it returning yet.

[micsa84]

Re: Panasonic TC-P55VT25 Vertical Green Line

I have the same thin line issue with a Panasonic Tx-l32s20e.

Normally it is a thin line but when i press the menu button the line does not remain.
It could be a panel issue or t-con board?

Sorry for my bad english.

[tom66]

Re: Panasonic TC-P55VT25 Vertical Green Line

Er... That's an odd fault.
Does it happen on all video inputs? HDMI and AV?

[micsa84]

Re: Panasonic TC-P55VT25 Vertical Green Line

Right now i can not test it because i dont have an hdmi cable. When i plug it to Pc via VGA the problem remains the same.

[micsa84]

Re: Panasonic TC-P55VT25 Vertical Green Line

I attach some pictures with the boards.

What could cause this type of failure?

[Shinju]

Re: Panasonic TC-P55VT25 Vertical Green Line

OK... Hell of a thing happened, turned it on last night and the line is gone. Ran for a good 6 hours last night and another 5 so far today, no sign of it returning yet.

Just incase he comes back.


Ryan, clean your bottom buffer ribbon cable that is in line with the line defect on your screen. It will return

Chances are that is a dirty buffer cable and it needs to be taken out and cleaned good.

I just repaired one that was FAR worse then yours and all I had to do was clean the cable and no more line!.

[micsa84]

Re: Panasonic TC-P55VT25 Vertical Green Line

I have just tested it on HDMI and it does't make that line.
in my opinion that rules out the t-con. It remains only the mainboard.
Have you ever seen this kind of defect?

[micsa84]

Re: Panasonic TC-P55VT25 Vertical Green Line

Er... That's an odd fault.
Does it happen on all video inputs? HDMI and AV?

I've made a mistake. When i connect a device trought HDMI the initial line dissapear and another two appear in different position.

[Schwaby81]

Re: Panasonic TC-P55VT25 Vertical Green Line

Hello,
I signed up to this forum because I have the exact same problem.

Was a resolution or fix ever discovered?

Thanks!
Ryan

[micsa84]

Re: Panasonic TC-P55VT25 Vertical Green Line

I didn't manage to find a solution to that.For the moment i left it aside...i think i will have to order a new mainboard.