I have a 63" Samsung connected to Blueray and Satellite box via a SR5003 Marantz receiver. Audio is through a 7.1 Def-Tech set up. The system is hidden in our mech room and the signal is run to the TV via Ethereal HDMI-Cat5 baluns. I am now getting "searching for signal" on the TV whether I go to the DVD or the Sat Box. It does not even play sound through the speaker system. If I disconnect the HDMI cable from the balun it will play the audio. Any ideas whats up? I have disconnected the baluns and left them for a few minutes then reconnected - no joy. Help please!