I'm trying to connect my new Sony Bravia Tv to my existing Dennon AR E400 system. I plugged the HDMI cable in the correct HDMI input on the tv and then put the other end into the correct input on the Dennon system(the same input that was used on the previous tv)and I keep getting a message that says no input detected and only the sound works through the surround system, but no picture. The Dennon system was working perfectly when we replaced the tv. When we plug the HDMI directly to the cable box we get a picture but not with our surround sound. Help we want both!