Not factoring in the 90 day warranty as a reason to use a new lamp right away, does anyone know if a projector lamp has a shelf life? ie. Does it actually break down and become more brittle just from sitting around? I'm wondering because I got a free replacement lamp as a rebate offer with my projector and it's probably not going to be used for a few years...should I sell it now and buy a new one down the road or is it ok to sit idle? Any thoughts?
I've never heard of a shelf life for lamps. The only reason not to store one (assuming it's in a temperate environment) is the 90 day warranty. Once that's up, shelve away...
After wasting $$ on a backup bulb that didn't last (but was out of warranty from sitting on the shelf), I've come to the following conclusion:
1) If you already have an extra bulb or get one "free" (like you did): great, save it
2) If you want to BUY an extra as a backup: don't, because either you're old one will last (and if it makes it anywhere near 3000 hours, that's a LONG time) or the new one will be bad (and you don't know it unless you use it--and you won't know after 10 or 20 hours either); replacement bulb prices don't really go up in price anyway.
...or if you want to purchase one to keep on hand, wait until 90 days has passed. When you get the new lamp, take the original out, shelve it, and use the replacement until it dies. That way you've taken advantage of both lamps warranties and you have a known-good backup lamp.
Thanks for the advice guys!
I got a free lamp as a rebate with my projector as well. I installed the new one as soon as I got it and stuck the used lamp on the shelf as the back-up. That way, I was sure that one on the shelf worked and I also didn't have to worry about being past the lamp warranty if it did not work.