My first HDTV was a Mitsubishi DLP. In addition to lamp burnout, another problem was dust on the mirror. So, every 6 months or so, I would remove the front screen to clean the interior. There was a small mirror which reflected the image upward from the lamp to a large mirror that reflected onto the screen. The large mirror never got dirty; but the small one did, as it was pointing upward. For me, cleaning that mirror produced more of a "brand new TV" effect than replacing the lamp. I was fortunate to find a detailed illustrated guide to the cleaning process on AVS. The first time I did the cleaning, I'd had the TV for a couple of years. The difference was amazing. I could usually tell the mirror was starting to get dirty by watching golf tournaments. A shot of a clear sky with the ball in flight would always reveal splotches that signified that the dust was starting to build up. I wonder if the newer DLP sets are prone to dust buildup. Do they still use the same mirror system? I decided I did not want to revisit the lamp/cleaning issues when I bought an LCD/LED earlier this year. I gave the DLP to some relatives.