OK, gentlemen (and ladies),
I took delivery of my 110FD this evening.
When the panel arrived I did a dead pixel check and scanned for cracks in the bezel and screen. Everything came up clear and beautiful. Then I started to dial in settings for break-in. That's when I started to notice a few different problems:
I think my panel may be suffering from the "Blotch" issue, or what I believe has been called by pioneer tech "Uneven Residual Charge."
What I'm seeing is this: on a bright white screen I see faint gray streaks running horizontally across some portions of the screen, most prominently right through the middle of the screen. It's not an even, perfect white frame. It reminds me exactly of how my old CRT used to look after I would wipe the screen down with a sponge. Faint smears would be left running horizontally across the screen. I could buff those out with an soft cloth though and get the screen back to pristine condition. These I can't.
I didn't clean or do anything to the screen before I noticed this. I thought it may have been dirt that stuck to the screen from the styrofoam bag thing the display comes in. I thought it had been stuck to the screen with static electricity and left some streaks. So I tried to see if I could spot them by looking at the glass at an angle with light hitting it. Nothing. The glass has nothing on it. I broke out the little towelette they enclose with the panel, put a white image back up on the screen, and looked to see if I could gently buff them out. No luck. They're not on the glass.
That means they're either in the content or in the panel itself. When I noticed this I was watching the break-in DVD which is composed of 720p files. I'm playing that back through a Denon DVD-1600 DVD player which outputs 480i. I thought, maybe it's macroblocking or some other artifact being introduced when scaling up to 1080p.
I switched to another source, my xbox 360 connected via HDMI. I loaded up a saved film from Halo 3, turned off ALL heads-up-displays so no crosshairs or ammo counters were being displayed - only pure 16x9 video. I just wanted to see another totally separate source. I paused the film and tilted the camera sky-ward to the bright white sky... The streaks were still there, clearly visible. It looks like I'm viewing it through a grimey window.
I remembered people talking about the "Blotch" issue. I thought maybe that's what I was seeing. I went back and re-read that thread and looked at the images brentsg posted here:http://www.avsforum.com/avs-vb/showt...6#post11268156
None of those guys talked about seeing streaks on a white screen, only uneven blacks on a black screen. So, I went back and looked at my panel when displaying an empty input. I turned off all ambient light. I see the same thing brentsg posted in his pictures around the edges of my panel, just not as bad. Essentially, what it is is some pixels are darker than others. They are mainly congregated around the extreme edges of the frame. Here's where it got interesting though. I had all the light off in the room. I let my eyes adjust to the darkness and as I did I could see other pixels - all over the screen - that were darker than their neighbors. The screen looks like it's pockmarked. And... running right through the middle of the screen - exactly where I see the streak on a white frame - is a faint line of darker pixels.
Is this normal? Is this "Uneven Residual Discharge?" Is this just a limitation of the technology? Can this be fixed by running the Break-In DVD to evenly age the phosphors? Or is the panel defected?
I'm seeing a little bit of Green Phosphor Lag on this panel. I've been working with a Panasonic 42" plasma for the last month and a half and I spotted this same effect only once, so I don't know if I'm particularly sensitive to this effect. I would have noticed it before now. Tonight, I saw it on this panel when viewing the trailer for "I Am Legend" when the title comes up at the end. This reminded me exactly of what I've seen here:http://www.hdtvtest.co.uk/news/2007/...hosphor-trail/
The guy who wrote this article mentioned that the problem may go away over time as the phosphors age and lose luminance. Would running the break-in DVD help in this regard?
I hear the buzz. Seems to manifest itself only after the panel warms up. It's not a deal breaker, but I definitely hear it. Viewing distance is 8 ft. It does get mostly drowned out when watching content, but it's a pretty noticeable frequency. Sounds like a ground loop hum. Every TV I've had though buzzed though, so, while not ideal, I can put up with it.
Any help I can get with these issues would be really appreciated. Thanks.
[Update: The buzzing seems to have diminished a bit. There's definitely a "buzz" sound, but to clarify it doesn't sound like a ground loop hum (which implies constancy), and when viewing content I don't notice it all. Maybe that's a testament to good immersive programming!