A Directv technician came out to my house a couple days ago to upgrade my receivers. The hardware I had before was a HR-24 HD-DVR and a H24-100. I kept the H24-100 active because I planned to install it at my folks cabin. When I attempted to install the receiver the signal gave me a 775 error message and could not recognize the signal from the satellite. I installed the receiver without a power insert since the technician accidentally took that with him when he left my house. I am not sure if that is the cause of the problem. Also, I am not aware of the satellite model, but I do know that their is one main cable coming down from the satellite to the a green labeled switch box and then from the other end of the switch box there are four outlets, one of which is the cable that runs to the living room. Any help on how I can solve the problem or what might be causing it?