pco614

I just purchased an STR-DH700 receiver and am installing it. I got it specifically to be able to run all hdmi through the receiver. I have connected my Charter digital HD box via HDMI to the receiver. I have also connected my Sony blu-ray player to the receiver via HDMI. I have also connected the 'out' HDMI to my Bravia HDTV (to HDMI 1 in). The blu-ray works perfectly. However, the cable signal is not making through to the tv. I know the cable box is working, as I just took the same cable and connected directly to the tv. What appears to be happening is the signal is very intermittent, practically non-existent but making an attempt to connect. If I have missed a step, can anyone please advise? Thanks!!!!