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Hi! I just got MBP and immediately noticed thin horizontal lines all over the screen, most notable on the white background. See this
Than I layed on my back holding the notebook on the knees so it face a bit downwards. A few moments later I saw a weird glitch developing. Now it doesn’t go. Watch - https://www.youtube.com/watch?v=uoO8_2GE… I checked LVDS cable, both it’s ends - they doesn’t look bad. No corrosion or anything like that. And I wonder - what da **** is that?? Most confusing is I literally saw it becomes visible, and that it happened after I tilted the machine.
The smear you are seeing is likely a bad signal decoder board (T-CON) on the LCD display unit. To double check plug in an external display if the image is clean there you know the issue is within internal display logic. Here’s a good breakdown of the display MacBook Pro Retina Display Teardown if you jump to Steps 8 & 9 you’ll see board at the bottom which processes the iDP (eDP) signal from your logic board (the older MacBook’s used LVDS signaling) Sadly, you’ll need to replace the display assembly MacBook Pro 15" Retina (Late 2013-Mid 2014) Display Assembly Presently iFixit is out of stock you’ll need to look for it using the Apple P/N 661-8310. Here’s the iFixit guide to replace it MacBook Pro 15" Retina Display Late 2013 Display Assembly Replacement
