I ran the scrolling screen wiper in the Burn-in Protection menu on all 4 Samsung plasma TVs at BB today, to see if I could detect any uniformity issues/color shift near the bottom or top of the screens, like Mark is seeing on his 60F5300s.
Before running the screen wiper, I set all the TVs to Movie mode, reset it to defaults, and put Cell Light at 20, and Color Tone (temperature) on Warm1. (There's a toggle button in the lower left hand corner behind the bezel on the TVs, that allows access to the menus.)
I saw little or no visible color shift on the 43F4500 and 51F4500. There appeared to be a hint
more red near the bottom of the screen on the 60F5300, and maybe also on the 51F5300. I had too look really hard to see anything on the 51" model though.
The issue might be a little more noticeable on the 60" model in a darkened room, to a well-trained pair of eyes, on tests patterns. But I doubt an average viewer would every notice anything on either of the F5300 displays.
The uniformity is outstanding on all these TVs compared to my 34" 2002 Sony CRT, fwtw. Maybe the problem is worse on Mark's TVs though.
Of the 4 models, the picture looked best overall to me on the 51F5300, due to it's higher resolution, and finer dithering than the other models.
There was some noise and "color creep" apparent in the dithering/contouring of the scrolling gradients on all 4 TVs btw. These issues were least noticeable on the 51F5300 though, because of it's smaller pixels/greater resolution. (I noticed this issue in my home tests of the F5300 and S60 as well btw. And imo, the color creep on B&W content seemed a little worse on the S60 than on the F5300, possibly due to the S60's higher contrast ratio, and somewhat darker blacks.)
The screen wiper scrolls more slowly on the 51F5300 than on the other models btw, probably because it has more pixels to wipe.
Originally Posted by eric3316
If you are not sure if yours has the problem does it even matter then? If you can't see it, then no, there is no problem so enjoy your TV and don't look for it.
^ Sound advice imo.