Why are colored lines running down my screen?
For about a year I've dealt with my Macbook having a screen issue. The screen area appears to be divided into 6 equal rectangular areas running up and down the screen. Occasionally the screen will start to flicker colors, making it a major nuisance on the screen, but not unuseable.
Up and down each rectangular area will be a bunch of flickering colored lines. It seems to come and go at random, though lighter colors are less of an issue on darker colors. On this website, which is white, there is no issue, but if I switch to a tab with Youtube, which has a dark bacground, it flickers right now.
I took it to a guy who repairs apple and he said I probably have to send it into Apple and they'll charge like $500 to fix it.
I've been watching a bunch of fixing videos on Youtube and now I'm wondering if this isn't something that I can try to fix myself.
Any help would be appreciated. Namaste.
Update added picture