Chosen Solution
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
What does an external display show you? If its clean then your internal display is damaged and would need replacing. Update (12/27/2020) MacBook Pro 13" Function Keys Late 2016 Display Assembly Replacement
As Dan said, a functioning external display would indicate that the graphics chip is working, and therefore the problem lies with either the cable running to the LCD display or the LCD display itself. If you could take pics of your screen - say with your phone and post them, that would help us. Otherwise, and this is pure conjecture, it sounds like the screen (and/or its assembly is damaged). The screen is either THE most expensive part to replace, or the 2nd most expensive part to replace - the other being the main logic board. Given it’s age, I’m guessing we can assume it’s out of warranty. If you want to do the repair yourself, there is a guide listed here. The replacement is fairly straightforward. It’s the likely cost that you’ll have to consider. Good luck.
