Just had my DLP chip replaced for $200
I had bought a WD-73736 on Craigslist for $200. It was a 2008 but worked fine for my basement. Had it 6 months and started seeing the white dot problem. After reading up on it and Mitsubishi offering replacement, I called Mitsubishi. They asked where I bought it, I said "I think at the Big Screen Store". Asked if has been services before. Said "No". Like I had any idea on either question. I described the problem and said I had heard there was a recall on the DLP chip. They operator said hold on a minute and came back with the offer to replace it for free with the $200 labor cost. I had already taken it all apart to clean everything so I knew how easy to was to replace. The amount of dust buildup on the heat sink was pretty bad.
The chip is ~$175 most places. I figured for $200, let someone else do it and take the risk of breaking that stupid ribbon connector. Service guy just got done and picture looks great again.
I am actually very surprised that Mitsubishi would even offer this on a 7 year old tv way out of warranty. The service guy said he sees these lasting 4-6 years. After taking mine apart, I'm guessing with a fairly regular take apart and clean and even put new thermal compound on the chip it will last a long time. It really only takes ~20 minutes to get t the heatsink and chip.