Chosen Solution
Hello, to my macbook pro 15 “, vertical lineas appear one on the screen, I have read thereabouts that if I connect it to a television and the same lines go out probably it is the graphical card but in my case it is not like that, does not show these lines in external monitors, which it might be?
Try re-seating the LCD cables, if that does not fix it you will need to replace the LCD or top case assembly. Has it been recently dropped or damaged?
there is the picture
This is a TAB issue. Please see this answer There is faint vertical green line on the screen
