Originally Posted by ppilot
So just to follow up on the slow pixel response here is picture of some of the magenta pixels I am seeing while watching Netflix. I haven't watched more than 30 minutes on the tv so far so I am playing a bunch of Netflix movies hoping it will work itself out. These definitely are not bad pixels as everything looked fine when watching a quick youtube pixel test. Any thoughts?
this looks EXACTLY like the problem you can create if you turn down the voltages on the Vs and Vscan too much(there's a mod to do this to improve black levels).
i did this with mine, and originally saw no issues at min voltages, and a huge improvement in black level. since putting my tv back together i noticed the magenta pixels occuring under very specific circumstances, usually in the top half inch of the screen.
the worst, is if i open up a black webpage and have just the tiny white tab on my browser at the top, the little white tab ends up being half magenta.
otherwise, if i'm very close i can sometimes see it in bright areas during high contrast scenes. a full white screen won't show it, it has to be something with a lot of dark content, and then really bright areas. and in the bright areas i'll see it. it basically does not occur at all with video for me.
anyway, point is, if you can get a tech out to adjust the voltages, it could probably be fixed. or if you want to yourself, check out the thread on improving samsung MLL with voltage tweaks. the last 5 or so pages talk about doing it with the f8500. be warned though, i have no idea what turning up the voltage too high can do. i 'think' the range you have access to is pretty safe, but i'm not a tech and i will not take responsibility.