I picked up a Pioneer SC1522K the other day so I could return my onkyo 818 and am now im experiencing an annoying issue. When switching from HD channels on my Motorola cable box to SD channels the picture cuts out, but I still get audio. It does the same thing going from SD to HD. If i turn the receiver off then on i get picture until i try and go back to HD or SD again. I wasnt having this problem with the onkyo the other day. I tried turning off video conversion and playing around with pass through settings on the AVR to no avail. I called Pioneer tech support and the guy was pretty confident that it is a hdcp handshake issue. I honestly have no idea. I'm an audio guy not a video guy. But I would think that if it was a hdcp issue I wouldn't get any picture at all right? Either way the rep said its possible that my 6 year old HDMI cables are the problem, I'm not so sure about that either since they have been working fine. Any ideas? It's driving me nuts and the AVR sounds great.