I have a Slingbox Classic working with a Comcast DTA (Digital Transfer Adapter/Cable Box). Everything works fine as far as viewing with SlingPlayer. Even the remote control works well. I decided to try and use the Slingbox "pass-through" function so I could use a television with the DTA. I connected the Slingbox output to my television using the supplied RCA cable and just get a fuzzy screen on the television. What am I doing wrong?