If the pictures has gotten progressively worse, I might consider Service more than I would consider Settings.
Are there any additional details I could assist with? I don't have a list of settings to just offer up (they are available on many forums), but if I can assist futher, please let me know.
I have recently purchased the above tv and at first was pleased with the picture but it seems to have gotten worse ( smearing around images, grainy.
Are there any definative settings to improve the picture