Chosen Solution
Hi, I have a Samsung LCD TV (UE50NU7455). When I turn on the TV it works normally. However after a while (aprox. 15 minutes), vertical lines appear on the screen. First a few on the right side of the screen, but in a few minutes it progresses to the rest of the screen (see photo).
I already performed the following actions: reset to factory settingsupdate firmwareremoved all connecting devicesremoved back panel and cleaned all connections and connectors (see photo)
I even bought and installed a new (secondhand) motherboard. However, same problem. After 25 minutes vertical lines came back. Question to the community. Any other suggestions on how to repair this? Thanks in advance! Update (01/12/2023) @oldturkey03 Thanks for your reply. I removed the bezel from the tv and teared it down a bit further. Attached a few more pictures from the LCD driver boards.
@pieter___ my concerns on this are the black spaces. Those mean that your panel does not get a signal on those areas. Follow the 2 flat ribbon cables from your main board. Do those plug into some “long skinny boards? Those would be the LCD driver boards. It would really help if you could get a little closer to those. I know it is going a pain since you may have to remove the bezel from the TV and tear it down further. Take a couple more pictures of that area and let us see what is going on there.
