Dell Precision 5510 4K UHD Touch display problem with vertical line

Hi guys, since yesterday I have one vertical line on my screen. I am sure it is hardware problem. I red some topics in the web about similar problems and decided to take off the bottom aluminum part of the case and to make sure  the display cable is on its place and is not lose. Everything looks OK. After that procedure the problem still exists.

So my question is : is there way to repair it without need to change of the whole screen assembly ? Can I change only the LED display cable, as I found some spare of them on Ebay ?

Does anyone of you experienced such a fault in this model display ?