I have a Motorola VIP 1200 Stb that I am connecting to the Logitech Revue. All the HDMI cables are properly connected, however during setup there is no live tv being displayed ... i have tried different hdmi cables but all with the same result. I have taken the hdmi cable that from the revue hdmi input and plugged it into the tv and live tv is playing. than take same cable and plug it back into the revue hdmi input spot and no tv. What is going on?