Sorry if this has been discussed already. I just got a LN40a650a yesterday and got it setup OK. I currently have 3 HDMI inputs to the set with HDMI 1 coming from a Scientific Atlanta 8300HD DVR STB (TWC Cable), HDMI 2 From a Sony s550 BluRay player, and HDMI 3 from a Roku DVP streaming box. I've got one problem that is driving me crazy and I'd appreciate any ideas.
The BluRay player and the Roku DVP are working perfectly but if I put the cale STB on any HDMI input, the picture is "jittery". That is, it jumps or "jitters" slightly vertically. This happens while watching any channel, and also is present when viewing the STB menu. The picture is rock steady with the BluRay player and the Roku DVP, as well as the set's internal menu display. I have another HDTV with a similar setup in my house and there is no jitter with that setup.
Given my symptoms, I think I have it narrowed down to the following possibilities:
1. Bad STB (I'm going to exchange it today).
2. Some sort of AC or RF interference on this particular cable run.
Any other ideas? Have I missed anything obvious? I'll put in a Samsung service call if necessary, but I want to eliminate any other ovious possibilities first.