Does wear out. No one ever wrote the part would last forever yet the early failures lead to some extended coverage and here we are many years OOW (out of warranty.) I'm surprised that Samsung can't fix it. Maybe there's more to this story like you asked them to fix it for free?
Disappointing that my 65 inch tv that is only used minimum for home theater use is going out. Having what appears to be a known issue of the DLP chip going out. Mirrors get stuck causing back or white spots on the screen. Have had no luck with Samsung getting the device fixed or part replaced through them.
Samsung can you step in and help with this issue.