Sorry for repeating myself as I posted this in the 6500 owner's thread as well, but since the 6500 and 7000 probably have the same panel, I was hoping to get some help here.
When I got my new 58C6500, I was overly cautious about breaking it in correctly. I scoured the internet and found a post somewhere where you could download a image file (of break-in slides) that I burned to a DVD. I popped that into my Blu-ray player and watched the screen gradually go through the whole color spectrum. (Boring !)
When the screen is COMPLETELY white I noticed that I have a section maybe a fourth to a fifth of the screen width in the center from top to bottom that has a bluish tinge to it. I don't see the remnants of the streak in any other of the colors. Just white. I thought to myself "Well, nothing is perfect". My wife hasn't noticed it yet (it's apparent to me with very light scenes, i.e. snow, etc.) The scene towards the end of Inception it is very noticeable. I also notice it on commercials when the background is white.
I also, through the SM, changed the model to a C8000, and have the latest firmware.
Just wondering if anyone else has this same problem, and if I should return it and hopefully get another one without the "streak".
I love the picture (other than this), and I thinks it's a great TV for the money.
Any help would be appreciated.