I need help. I got a LN40A550 last Friday and I like it so far but I am having problems with HDMI inputs on ports 1 and 3. (HDMI port 2 does not exhibit the problems I am about to describe.)
The setup is simple: LN40A550 connected to Philips DVP5982 or Oppo DV-980H (does not matter which DVD player is connected, but in testing only one DVD player was connected at any time.)
I am using a monoprice HDMI cable (model 3992) which has two ferrite cores molded into the cable. This cable is supposed to support HDMI 1.3a and category 2, so I thought I was buying a good cable. However, I think I read somewhere else on this forum that Samsung TV's, in general, don't like cables with ferrite cores. Too bad I didn't read that until after I ordered.
Anyway, If I plug the HDMI cable into port 1 (or 3) of the TV, I will either get a "no signal" message from the TV or it may try to display something. However, if it displays anything, it is really stuttering badly both in video and audio. It is completely unwatchable. Note that this ONLY happens in 1080p mode; other lower-resolution modes appear to work fine. I may also see random white pixels appear and disappear very quickly all over the screen, and random streaks of pixel lines going across the screen. It is as if the HDMI signal quality is so poor that the Samsung HDMI decoder cannot properly process the signal data. Mind you, the cable is only 6 feet long.
Maybe I have a bad cable? Yeah, I thought so too... Since the Oppo DVD player came with an HDMI cable, I started testing with that. It also has ferrite cores on both ends, though they are further away from the connector ends than the monoprice cable. MUCH better picture quality (actually watchable), but still not perfect on HDMI 1 or 3. I still see white pixels appear and disappear randomly on the screen, though it is not as bad as before. Stuttering appears to be almost non-existent (I thought I saw one stutter in 45 minutes of DVD movie playing), however the video quality still does not match HDMI port 2, which is absolutely 100% perfect (no random white pixels, just pure stable video).
I know a couple others have posted in this thread about the same or similar issue. Has anyone determined what could be the problem?
I have ordered monoprice HDMI cable model 3661 to see if removing the ferrite cores makes any difference.
Since both HDMI cables work perfectly on HDMI port 2, why won't they work on ports 1 or 3? Seems like a bug in the firmware to me.
Thanks and sorry for the long post,