Chosen Solution
Hi, I have a refurbished 27" Apple LED Cinema Display that I bought from Apple in 2014. It was perfect until yesterday when it randomly showed a vertical block of pixels near the middle of the screen with some form of discoloration. I made sure the graphic card is not the suspect here by trying another display as well as using the same display on a different Mac. The problem persists, so it’s something in the display. What surprises me is the fact that these are not dead pixels; they are dynamically changing color, and can clearly be seen kind of flashing. Also, this morning I woke up my Mac to find that the display went back to behaving normally. However, a few hours later, it started doing the same thing, with different colors. Sound is working fine. What is the cause of the problem? And is it worth fixing? I also attached pictures of the problem when it happened the first time.
Hi, It looks like a damaged cable in the LCD, so switching the LCD would probably fix it. unfortunately those are pretty expensive, so it is probably not worth it, unless you can buy a broken LED cinema display that has a good lcd.
