Ifixit but it didn't work

I have a philips 43pus6262/12 and I get horizontal lines and some kind of upwards scroll of screen. I opened the TV and disconnected the left wire tape of the t-con and then the right (one at the time) and found out that with the left side disconnected half of the screen was white and the other half was displaying just fine. When I did the opposite I got white on one side and lines on the other. I just don't know if it's issue of main board or t-con. Can anyone help me? Thanks!