I just purchased the 40PFL5505D/F7 set and am impressed with the HD picture quality. However I seem to be having an issue with SD on the composite input.
I have a couple ReplayTV DVRs hooked to a switch that is connected to the composite input. The picture looks OK for some of the shows I watch, but others have obvious interlacing artifacts (horizontal lines in fast moving sections of the picture).
I was wondering if there was any setting that could alleviate this problem.
I see the artifacting no matter which picture format I use (but usually use 4:3).
I have tried turning on/off a bunch of video settings, but none of them seem to have any affect on this issue (although I may have missed the right combination of settings).
One other thing I noticed is this:
My ReplayTV DVR has a screen saver that comes on after no activity. It is the circular ReplayTV logo that moves in a diagonally straight line across the screen until it hits the edge and "bounces" off and starts moving in the other direction (think the ball in "pong").
Anyway, most of the time when I look at this, it is fine, but occasionally when the screen saver turns on I will see obvious interlacing artifacts on the circle as it moves across the screen.
When it happens, if I change inputs to another source on the TV, and then go back to the composite input, the problem goes away.
Note that nothing I do (including switching inputs and back) seems to resolve the artifact issue on the actual video content.
I don't know if this screen saver problem is related to the general interlace artifact issue, but I just thought I would include that, just in case it gave further insight as to what may be happening.
Here is something that may be a clue as to what may be causing the problem:
If I pop up any on-screen-display (OSD) (such as pressing the "Info" button on the remote), the problem goes away for as long as the OSD is on the screen. As soon as the OSD goes away, the problem returns (this is for both the screen saver screen and for normal video playback). If I play a segment of video that displays the problem, and then replay that same segment with the OSD on, the problem does not occur.
Note that the issue seems to mostly occur during scene transitions (where the entire picture changes from one frame to the next), but I also see it during some fast-movement scenes.
Thanks for any help anyone can provide on this.
> UPDATE 2 <<br />
I just noticed that if I turn on "Digital Natural Motion" (either Minimum or Maximum) it also fixes the problem, however I would rather not have to turn this on while viewing this SD content, as I have noticed some undesirable side-effects.
I really think this is something that can be fixed, I just hope that a setting or firmware update is available to do so.
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