To the best of my knowledge, Marcus, DLP bulbs do get dimmer as the approach the end. Mine is certainly getting dimmer and it's going on 3 years of usage. Don't really know the hours. I have a new bulb ready and waiting but I don't want to install it prematurely because I will likely have the TV re-calibrated professionally when I do replace it.

Jack

"People generally quarrel because they cannot argue." - G. K. Chesterton