Much like you, I have the Samsung DLP defective chip. I actually have my receipt even though it's 4 years old. However, they will not help me because my select model was not one chosen for free repairs.
I will never buy Samsung again unless they resolve my issue. I am waiting out hope, but suspect I will not hear from them again.
I purchased a Samsung DLP HL-S5665W a couple years ago and at the end of last year I started experiencing the DLP- chip malfuntion where it displays many dozens of largeish white spots all over the screen. I contacted support about this notifying them of the issue and advising of other situations where they have fixed this issue. After many hours on the phone and speaking with OOP (Office of the SECA President) They refused to resolve the issue. They demanded a receipt which I no longer had and honustly who keeps a receipt for more then a year? Either way with no support from Samsung I threw out the TV.
This week I found out a friend of mine had the EXACT same issue with his out of warranty TV with no receipt. Samsung has already scheduled a technician to come out and fix his TV. He was able to resolve this issue with first level support.
Samsung if you read this, get your act together all customer should be treated equally and due to this I will not buy another Samsung product again.