Thick black vertical bar Samsung UE48h6400

[Moe100]

Hi All,

I would appreciate some advice regarding a thick black vertical bar that has appeared after replacing the backlights on my Samsung UE48H6400 tv.

I have re-seated and swapped over the lvd cables from the T con board to see if the problem followed the cable but it didn’t and the problem still persists. I also blanked off parts of the lvd cable with tape to try and force the signal via a different point of the cable, as you can see from the photo at one point it turned the black bar grey (ie it illuminated every other lcd within the black bar).

I replaced the T con board but this has not resolved the issue. Can anyone advise what I can do next to fix this fault? TIA