I have a Samsung model # LN-S2652D that powers on but does not display picture or sound. I removed the back housing and the backlight seems to be functioning as I can see light through the back hole outlets. I have also replaced the t-conn board as a suggestion from a parts seller. The power supply's caps don't look to be busted, raised, or leaking so I am not sure if it maybe between the mainboard or LCD panel? I was told by the parts seller I purchased the t-conn from that the LCD panel is bad. Is there any way to tell if I have a bad LCD panel or mainboard? The parts guy told me he thinks the LCD panel is bad because I did not see any lines on-screen when I wiggled the LVDS cable in and out from the t-conn end. What do you guys think?