@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.