Join Date: Jan 2003
Location: Mountain View, CA
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I've got the Panasonic 37" SD (5UY), mostly it looks great, but there's one problem I call the "creeping crud".
This only happens on the S-Video input, not on the Component or VGA. The problem is that the black level at the top of the screen (about 6" of it) is different from the black level for the rest of the screen. This was first apparant when using a claibration DVD to set the black level.
If I set it so the level is correct for the top of the screen, I get lots of inky blackness in dark scenes. If I set it so the black leve is correct for most of the screen I get the creeping crud in dark scenes. That is the top of the screen is then just above black, the way the display copes with dark greys seems to be by dithering, so it gets really noticible.
Like I say it first showed up with the during calibration. Its obvious on a 10IRE feild, a grey ramp across the screen will bend at the black end. It totally does not appear component. Once I saw it on setup it becomes obvious in dark scene, not just from the DVD, but from the VCR and the tuner. I swapped cables, so that doesn't seem to be the problem.
This is what got me to call out the repair guy. He couldn't fix it. They did swap the display for a new one, and it does the same thing, not quite as bad. So I'm guessing its not sample variation, maybe a bad batch.
Anyone else seen this problem?
The only thing I can think of is a bad S-Video input board. Any ideas? Should I just kick up a fuss until I get a good one, or contact panasonic. I really like the display apart from this (and there's too much green).