I have no idea where the caps are for. I opened up various Saturn SCART leads, the official one had a capacitor sitting between 2 pins whereas the 3rd party ones had none :huh:
Moreover, this 'high contrast buzz' you speak about, do you mean a buzz coming out of the TV's speakers when lots of white or other bright colors are being displayed? I have that with my Dreamcast, very annoying. I wonder what causes it, as I'm using an official SCART lead and I cant imagine it's not shielded enough.