Hi I have the same problem with my new Samsung HL-S5687W 1080P DLP TV, when I connect the HDMI picture plays for a few seconds, freezes and then goes to black, it keeps doing this constantly. Everything is fine with component cables. Called Samsung but they are pointing the finger at Directv, Directv admits that they know about the problem and are trying to fix it, when, nobody knows. Directv didn't bother to tell me about this problem before I signed up with them, so I'm thinking about calling the better business bureau about this. Samsung and Directv should have communicated to each other about this problem and solved it. I'm tired of being the guinea pig for these companies