Chosen Solution
hi, My iMac screen recently started displaying 19 vertical red, green,blue lines . But they are invisible/ disappears when something white displays on screen darker the display is sharper the colour of the lines are. line are static even resolution changes. I tried removing and reseating the LCD cable that connects logic board. Can anyone advice me to try something out to fix. See below images too.. with darker background (notice the lines)
in white background (no lines)
Sorry but the only way to fix it is in the trash
