I'm sorry to hear that you're having problems with your HLT5676.
I've sent a service ticket to see if I could have your case reviewed by one of the service managers as of this evening. I can't determine or suggest if this will result in a repair covered by Samsung, but one of the managers will review your case.
Just started getting white dots today. After reading this forum and learning that it involves a defective chip, I called Samsung, only to hear that my model was not covered. While reading other posts I see that this model has in fact been covered. Can you offer any Help?
Model # HLT5676SX/XAA
Thanks in advance for your help.