I am trying to use a SPS-1 with a Toshiba TW56X81 Television. I set it up with the video out jack. Everything works fine with the power sensing if I am on Video 1 or 3 but shows no signal if I am on any of the composite video inputs or on video 2. Is there a way I can use the SPS-1 with this TV or should I get the other power sensor?