I have an Apple TV running the newest software, but I just got my dad a slingbox for fathers day, and had to switch around some cables. Before, I had my TV connected by component, but now i need to use HDMI due to the lack of inputs on my TV. However, since I've been using HDMI, I've only ben getting the sound (which is plugged into my sound system by the red and white cables). The video has shown up occasionally when the TV is starting up, but then left. I have tried going through all the inputs in my remote, and it wasn't there. I am able to get my XBOX plugged in by the same cable into the same HDMI port, so I know it's not the TV or cable. Can anyone please tell me if something is wrong with my TV, or if I did something wrong?