White dots on screen.

SOURCE: I having white spots poping up all over my screen

check out for the convergence ic on the convergence board that ic must be faulty and it needs replacements.there are two such stk ic that both needs to be replaced as replacing 1 ic will not solve the problem.

SOURCE: White dots appearing on Samsung TV screen and multipling each day

It seems you might have an issue with the dmd board. Go to the menu, and if the dots still show on the menu, the issue definitely is with the dmd board but if they don't come up on the menu, the issue will be with the video board.

SOURCE: Samsung Slim DLP TV white dots on screen Model

No way to fix it solo, but Samsung is aware of the problem. Here's a link to the solution:

http://forums.cnet.com/5208-13973_102-0.html?messageID=3162774&tag=emfrnd#3162774

SOURCE: HLS4676-XXAA/ white dots

If this TV is DLP it is the Light Engine
Call Encompass Parts 1-800-638-3328

SOURCE: White dots all over the screen

call samsung. there are aware of this issue with several of their dlp sets. To avoid a class action lawsuit, they've extended the warranty of several models to cover the very issue. give samsung a call and see if you model is covered. i just got my 46" repaired at no cost and without a warranty.