I just had DIsh out for an upgrade to HD. I have the receiver hooked up to my HD Sharp (TV 1) in the living room. There is a SD Sylvania (TV 2) in the basement that is run off the same receiver. Everything was fine until I tried to hook up the TV 2 coaxial to a Toshiba TV. (The Sharp replaced Toshiba and the Toshiba was working fine a week ago.) When I turn the TV to channel 22, I can see the picture for a split second and then the screen goes to fuzz. I hooked the coaxial back up to the Sylvania and it is fine. Is there something I need to change to allow the picture to come in on the Toshiba?