Here's a video if you are into doing it yourself.
Be sure to call in as there are a few that Samsung will still extend an one time fix. It's an area of long deep discussions which I will not enter into a debate. However I do have some documents about the Ti part and it looks to be a limited life span part.
Model #HLT4675SX/XAA The picture and sound are great except for the white dots across the top half and sides of the screen. Is this an easy fix?