my 46" lcd a few months ago started doing this, when you would turn it on it would be like a dark green color on the right side of the screen, after about a hour or so it would starting coming in perfect. its done this everyday, so its like once the tv warms up it works fine. now today i goto turn it on after months of it doing this, and all i get is a black screen ? does anyone who repairs these know what the problem could be ? is it something i can replace myself ? thanks