Just hooked up my new Marantz SR 5002 to a Sony Bravia 52XBR4 using HDMI cables (out from DVR/Cable Box to input on 5002, then out 5002 to input on Sony). No picture, no sound. The TV worked fine with HDMI hook-up directly from the DVR/Cable Box to the TV, but when I put the Marantz in the loop there was no signal. I checked both HDMI cables and they work OK hooked directly from the cable box to the TV. Any suggestions for this newbie?