I am at my wits end trying to figure out what is causing this problem with the picture on my brand new Samsung PN59D6500. I have done hours of research and trial and error trying to solve the problem and nothing has worked yet.
The other night, I noticed tiny green dots constantly floating up all over my screen in the black areas when I was watching a Blu-ray movie. I couldn't see them from four or more feet away from the screen, but I could when I stood really close to it. It's doesn't affect my actual movie viewing as my seating area is far enough back that I can't see any of the dots and the picture is crystal clear and beautiful. It's the thought of this on a brand new set that is bugging the heck out of me.
After quite a bit of research, I believe it's called "green dithering dots" or "dot crawl".
However, when the BD player is turned off and there is no video signal going into the TV, the screen is completely solid black like it should be (except, of course, for the signal input indicator in the upper left hand corner of the screen).
I see these green dots whenever there is an external signal coming into the TV (i.e. Blu-ray player, cable TV), but I don't see them when I pull up the TV's internal menu. For example, when I put in a movie and pause it during the opening frames that are completely black, I see the green dots all over the screen. But, if I pull up the TV's menu on top of this movie, the green dots will NOT be inside the black parts of the menu, but will still be there in the black parts of the movie signal.
My gut tells me this is some sort of interference since it only happens with an external video signal, but I'm not sure. I've tried turning off the modem and router (which is very close to all this equipment) (but I didn't unplug them) and this didn't help anything. I have the ferrite cores that came with the TV around the TV's power cable (more than 8 inches away from the TV like the instructions said) and around the HDMI that is coming into the TV from the receiver.
I'm using two HDMIs in my entire system: both are 6' 1.4 cables from Monoprice.
Could this be interference of some sort? If so, how do I pinpoint where it's coming from?
Could this be because the ferrite cores that came with the TV aren't in the proper place?
What is this and how do I make it go away?