I recently entered the world of HDTV by getting an NEC LT260 projector. I'm curious about ways to maximize lamp life. Here's a situation where my question comes from: A few times, I've been using the projector, and the time comes to have dinner...which might take 30 minutes to finish. Is it better for the projector to leave it on during a time-span like that, or is it better to turn it off when it's not going to be used for 30 minutes or so, and then fire it back up? My temptation is to turn it off, but I know that the lamp runs hot and turning it off probably stresses the bulb as it cools back down, so why not leave it on so that it only goes through a heating-cooling cycle once, instead of twice. Or does this reasoning underestimate the ability of the bulb to withstand heat-cool cycles...will the bulb simply last a fixed number of hours (depending on whether it's in Eco or Normal mode) regardless of how many heat-cool cycles it goes through? Any thoughts? EDIT: Aye...I posted this in the wrong topic! Can a Mod please move it to "Display Devices"