Here's an example video of the work involved but always call it in and see if Samsung will offer a parts only fix or nothing.
Video link after.
I have a Samsung DLP TV that is about 4-1/2 years old. My TV is Model #HL61A650C1FXZA. About 3 weeks ago, one white dot appeared on the right side of the screen. Every day more appear--several hundred by now. The picture is still clear and vibrant. I replaced the lamp in December 2011, and that is the only problem the TV has had. I have not yet called Samsung. Are the dots (I assume dying pixels) fixable?