I just purchased the 2802 and have hooked it up the same as you have and it works fine. If I turn the TV on the sound from the TV comes out and if I then turn my dish on the sound from my dish comes out because the digital input overrides the analog, make sure the receiver is set to auto detect...
I am selling my HSU Research VTF-2 sub that I purchased 2 months ago for what I paid for it ($449.00) shipped. I will ship it in the original box and with everything that it came with including the Sales receipt for you to use if you need to use the warranty.