I bought an AV cable for 30gb iPod Photo and am having a little difficulty using it, it doesn't come with any instructiosn after all. I have selected PAL and TV Out on the iPod and then hooked up the colored cables to the corresponding jacks on my TV but nothing happens. I have scrolled through all the various channels on it, AV1 AV2 s-Video etc. Everything else runs through my digital box. Do I have to reset up my TV or scan something?