My samsung DLP 720 tv doesnt want to work with my Scienticfic atlanta cable box. The cable guy couldnt get it to work either, but I dont think he knew what he was doing when it came to finangling my TV to do what he wanted it to do. So, I plug in the HDMI to both ends, even restarted the cable box with both ends plugged in and nothing shows on the TV, yet it still wont show my 720 picture. The TV works fine with my HDMI laptop though. The TV also work fine with a/v cable, and aux cable. The cable box shows a 720p indicator on it at all times as well. Any suggestions to figure out how to deal with this would be appriciated as im out of ideas.