Roommate has a 46" sharp 1080p hdtv, and when watching cable and on SD channels and even on hd channels when it is not hd, there is often a small bar on top fo the screen that has flickering white lines or something like that in it, someone told me it was an audio track showing up? but what would that mean? and when it is not hooked up using the hdmi cable it doesnt show up, the component cables dont do that but component cables suck so i want to use the hdmi, how do I get rid of this annoyance? any help would be great...thanks
