I'd look to www.samsungparts.com and shopjimmy.com Here's a video on what you see most of the time.
http://www.youtube.com/watch?v=JgiZdc4kZDw

The ones that got replaced were the early failures. Today we should be seeing them fail daily as they get into the expected failure rate. I have a Ti document showing these won't last too many years so it's a shame that all this wasn't shared early so consumers didn't get any idea this was supposed to last as long as our old sets.
Bob