I've had my g25 for about a week now, and have been a bit unsure about some of the display.. quirks.
I have no cable connected, as it was purchased primarily for gaming (less input lag/display lag than most LCDs I looked at). I have a 360 and PS3 connected, but have this far only observed this issue with the 360.
When sitting at the dashboard screen (which I try to avoid on account of all the still images), there seems to be a lot of flickering noise on the darker backdrop on the bottom. I TRIED to take a video of it, with limited success:http://www.youtube.com/watch?v=isp6A_BNPk4
Any bluish flicker you see in all that black is basically what I'm seeing on the darker portion of the backdrop. It reminds me vaguely of the sort of noise/fuzz you might get over a so-so connection on an older CRT. Except, instead of the random color you might see on a CRT, these are all mostly bluish blips.
The 360 is connected over a "high speed" HDMI cable I picked up off of monoprice, and is displaying/outputting at 1080p, the same res as the display. So, I wouldn't think it would be connection issue. However, without ANY input, I don't see anything like that. When using the media viewer to run test patterns, they also seem solid.. without any of that. Mind you, neither of those have movement or a mix of colors on the screen.
As an additional note, but... less hard to track. The display (again, on the 360 at least), seems to occasional get a flicker of a white line horizontally. Not constant, very short, and not completely solid... more like a thinner version of the lines you'd see when using tracking on a VCR, and just a single one.. and usually not across the entire display. I'm sorry, I'm trying to give the best possible description, but I'm not sure if I'm doing a good job.
I'm concerned, as I just purchased the TV, if it's a manufacturer's defect with the TV, or there's some other issue. I know there's some noise reduction settings, Blur reduction, etc. Right now, all the extra settings are off, and the contrast/etc. are dialed down as I've been running patterns to break-in the TV for the first 100 hours.
Is this normal? Or what's causing the flickering blue spots and/or that occasional white line?
Is there something I can do setting-wise to correct for it?
I've been using XBR960 as my HD display since it came out, and I wanted to "upgrade" to a larger display that was actually 1080p - I suppose I'm unacquainted with all the quirks.