If you are posting on all forums you should have encountered this on the other makes as well. Here's a video about how much work it is to replace the DMD.
The white dot issue is well discussed so good luck in your quest.
Tansaction# 5105229207 Model#: HLT6156WX/XAA, Serial#: 33V3CKPA00618A. DLP TV has white and black dots appearing more and more everyday. Samsung is saying only some models are officially covered but mine isn't. Please Escalate this. All Samsung DLPS made in 2009/2010 are having this problem. Please admit to the problem and offer to repair my DLP TV.
I called Executive Support and they are claiming that they don't know of any problems with my model. This is obviously a Samsung DLP Widespread issue, but only "certain models really have problems" according to Samsung Executive Level Support. I would like this to be fixed. I am posting on every forum I can find to try and get help/escalation.