Last Thursday night (8-12-10), I was watching my HLT5075S and noticed two white dots in the upper left corner, also noticed a dark dot. Used Google to search the internet and found lots of info, even videos on YouTube.
I called Samsung (1-800-726-7864), and complained about the white dots, and mentioned I have read all about the white dot issue on the internet, and even though my set is out of warranty, I need it repaired for FREE, and the guy on the other end of the phone, gave me a service order number and said he would have a service tech call me to setup an appointment to replace the chip, no big argument.
A local service company called me the very next day, said they ordered the part and would come out on Tuesday (8-17-10) and replace the chip causing the white dots. He said it would take 30-35 minutes.
Monday evening I searched Google for more info, and found this GREAT site, WOW, this is assume information. Sorry so many had to pay for their repairs in the past, but if not for them and this site, I don't think Samsung would be taking care of me today.
I do admit, the service guy has not been here yet, now I have over 10 white dots and two dark dots, and another one just tonight that is blinking. I will see how the repair goes on Tuesday (8-17-10), and report back on how it goes.
Talking with the actual service guy, he has only been doing these repairs about a year, so I don't know how good he is and if the TV will be fuzzy when he gets done. I will quiz him before he starts work to make sure he knows hoe to adjust the alignment if necessary. I down-loaded the PDF procedure I found on this site.
Wish me luck.