Basic Tivo Roamio - Yamaha RX-N600 (no HDMI) - Old Sony Triniton HD XBR 36" tube set. I have one of those HDMI cables that converts to red, green blue, red, white. I've tried from Tivo to Yamaha component input but no picture on the Sony. What am I missing, other than having a giant old tube set and an outdated Yamaha receiver. BTW this all worked great with my old HD Tivo. Any suggestions?