Hi everybody,
I have had a really good look around this site trying to find a possible fix for the vertical lines issue on my tv. So far, I have found various cases of vertical lines on the screen, but none like what I have, so thought I would ask for someone else's opinion on what to do next. The lines are in the same place from start up, in all menus including the service menu, and in all test screens as well as all input sources. The lines appear over the Smart TV boot screen as well.
I have checked all boards for obvious burns, and reseated all cables. The cable from the power board to the video board had slight brown marks on pin 19 and 20, so I turned the cable around. No difference... The voltage drop across the cable was minimal.
I have swapped the ribbon cables from the Tcon to the panel side to side, with no change. With one cable removed, the other side is black, and the active side has the same lines.
I have factory reset the tv in the service menu etc. I have conducted panel tests in all the test menus I could find that changed the display and the lines did not move or change.
I have stripped the frame off completely and checked all tab bonds with no sign of burns or obvious shorts. I have tried pressing tab bonds on bottom of screen near panel pcb and no change at all.
I have tried freeze spray on various chips that felt warm, no change.
It seems that there is nothing obvious and now I need to do some component level testing or perhaps buy a new Tcon.... Or am I wasting my time? Is the panel likely beyond repair?. So far, there is nothing I can do to make the lines change or even flicker. I suspect that because they are static and the same in every screen it is a panel fault.
Thanks in advance for your help.
I have had a really good look around this site trying to find a possible fix for the vertical lines issue on my tv. So far, I have found various cases of vertical lines on the screen, but none like what I have, so thought I would ask for someone else's opinion on what to do next. The lines are in the same place from start up, in all menus including the service menu, and in all test screens as well as all input sources. The lines appear over the Smart TV boot screen as well.
I have checked all boards for obvious burns, and reseated all cables. The cable from the power board to the video board had slight brown marks on pin 19 and 20, so I turned the cable around. No difference... The voltage drop across the cable was minimal.
I have swapped the ribbon cables from the Tcon to the panel side to side, with no change. With one cable removed, the other side is black, and the active side has the same lines.
I have factory reset the tv in the service menu etc. I have conducted panel tests in all the test menus I could find that changed the display and the lines did not move or change.
I have stripped the frame off completely and checked all tab bonds with no sign of burns or obvious shorts. I have tried pressing tab bonds on bottom of screen near panel pcb and no change at all.
I have tried freeze spray on various chips that felt warm, no change.
It seems that there is nothing obvious and now I need to do some component level testing or perhaps buy a new Tcon.... Or am I wasting my time? Is the panel likely beyond repair?. So far, there is nothing I can do to make the lines change or even flicker. I suspect that because they are static and the same in every screen it is a panel fault.
Thanks in advance for your help.
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