Uh huh. That's what I thought. I think there's a connection between the metal shell of the S-video cable and the receptor, such that even when the cable is connected but off, the TV still senses the presence of the s-video cable and cuts the component video in. I wonder if I wire the pins directly (without the shielding shell) whether or not the same phenomenon will happen. However, I have no idea how I could get that to be any sort of a connection that could last long enough for testing.