To add to the above, we need a picture of the issue but if its really thin, maybe single pixel wide, lines that are (from what I've seen personally) usually green, red, or black - its likely that strip of pixels failing or physical damage. Which isn't often repairable without replacement of the LCD screen itself as far as I know, unfortunately.
@ratishulvekar post a picture of what your screen shows you, with your question. We need to see what you see Adding images to an existing question
by oldturkey03
To add to the above, we need a picture of the issue but if its really thin, maybe single pixel wide, lines that are (from what I've seen personally) usually green, red, or black - its likely that strip of pixels failing or physical damage. Which isn't often repairable without replacement of the LCD screen itself as far as I know, unfortunately.
Can't help diagnose without a picture though.
by SparkWorx