We have an older (about 10 years) 73" Mitsubishi DLP that is starting to show these tiny white dots on the screen. Abour 2 months ago, we replaced the bulb since the picture was really dark. That made a big difference, However, with these white dots showing up, does this mean the end of this set or can it be fixed? These dots started Fri. evening and we are up to 4 of them now.