I'm hooking up my new HK AVR125 and I'm pretty sure its defective, but want to make sure I'm not screwing something up. I am unable to switch video sources (cable,DVD,VCR). I have DVD to AVR via S-Video & Optical audio. DVD plays and sounds great, however, using any other inputs (Video1,2 or 3) for RCA outs from CABLE Box or VCR I can only get AUDIO, but TV stays blank(dark). I only have S-Video Monitor Out from AVR to TV. Using RCA-Monitor Out I can get VIDEO on TV only if the S-Video is disconnected. Any thoughts before I tear it down??? Thanks.