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Hi, my macbook pro keeps flickering with vertical lines. Keeps appearing and disappearing every 2 seconds. Would this be due to a loose connection? Is there something I can try to get it fixed? I don’t want to purchase a new screen as it costs more than the laptop itself. It works fine when I plug it into another display. No liquid damage and has never been dropped. Thanks!

Hi. Most likely the LVDS cable has been damaged. Either that or the connector on the board is starting to fail. You can find those displays for pretty cheap, and the repair process is pretty straight forward.

Do you tend to use a spray cleaner on your display to clean it? If you do then I fear the liquid dripped down wetting the T-CON board messing up the clocking of the scan with corrosion buildup! You’ll need to take the display off to gain access to the logic within the display assembly, then using some cleaners hopefully clean off the corrosion and if needed resolder the joints. The eDP cable connector may be damaged which would require deeper skills to replace. Follow this guide MacBook Pro 15" Retina Display Late 2013 Display Assembly Replacement then review this teardown MacBook Pro Retina Display Teardown so you can see things. carefully lift the T-CON board so you can gain access to the other side. Be very careful here! Unplug the display eDP cable and take some clear pics so we can see what you are facing post them here Adding images to an existing question