Vertical lines on Samsung LCD screen
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 settings
- update firmware
- removed all connecting devices
- removed 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.
Это хороший вопрос?
@pieter___ third image top TAB. Is it loose or is it just the light? Any difference to your pictures if you apply some gentle pressure onto the ribbon cable?
из oldturkey03