HR24-200 Receiver (refurbished)

Recently my previous DVR died. It was an old but dependable DVR. Directv replaced it with a HR24-200-R receiver. I connected it just as I had the previous receiver. I have a dish that has a double head and provides a cable that splits into two separate connectors. I didn't change any way that I had connected it as the previous one. I could not get a proper signal. The picture is fuzzy and is just plain horrible. I called and no technical customer service person could give me any suggestions that corrected the problem. The receiver is a HD DVR and the TV that it is connected to is a 60 inch Sony HD TV that had no difficulty with the previous HD DVR model that I had. I even had a technician come out to see if there was an issue. First off he looked as if he hadn't bathed in weeks and was extremely unprofessional. He came in and grabbed my remote and flipped through the channels and said "There isn't anything wrong with it. You have a great signal." I tried to explain that the picture was now grainy and was not presenting HD picture quality as it should. He said that it was probably my dish. I explained what my dish was and he said "Well, it isn't the DVR or the dish. It's your TV." Needless to say, I asked him to leave as he was not providing any help. Does anyone have any suggestions for settings for the DVR. Specifically which dish type to choose and things that are on that menu when you attempt to set up the DVR. I am so frustrated with the service I can't even think straight. I have been a long time customer (over 15 years) and sending an old refurbished DVR just blows my mind. You would think that they would have sent the most recent model or at least a refurbished recent model. All of the research I have done on this one shows that it has essentially be discontinued by DirecTV and isn't issued anymore except in cases where they replace non-working DVRs. Any help that could be provided would be terrific. It is a model from 2011 and even has reconditioned stickers on it showing that it has been reconditioned 4 times before me. Please help. I originally bought the receivers I had from Best Buy (like I paid for them outright) yet Directv says that it doesn't matter whether I bought the receivers or not. They belong to them. So I pay for the service, I pay a rental fee for receivers (that I bought and own) and I pay for HD DVR service which I now can't even get to show on my TV. I have looked and looked for even an owner's manual and can't even find one online to get any suggestions or directions. It's a shame how far DirecTV has fallen in their customer service. Again, any suggestions or directions or even telling me where an owner's manual might be would be great. The picture I get now has been reduced to a picture with the black bar at the top and bottom. No matter what changes I make that is the only picture that is clear so I leave it at that. Thanks.