I hooked up my optical line to my v4s optical line to see how well it worked. It made a crackling noise, which was far more noticable in the bios and in menus than in games. Not just because there was more going on ingame. My XBox works fine with the same cable, so it can't be a reciever or cable issue. I am running a hdd in it with hdloader. Anyone know of a possible cause?