Originally Posted by FFWD
I've had my 8500 UB since I moved into the house that came with it in 2011. We use this projector like a TV (since we don't have one), and it gets a good 5 hours per day easy. Been through 2 replacement bulbs that lasted over 2 years each time with no drama other than the picture suddenly dimming, then the projector shutting down to flashing red light mode. But a few days ago, I heard a loud pop and projector shut down to the red flashing light mode. Never had that happen before when the last 2 bulbs died. This one that popped is from the same company as the previous one. Does this sometimes happen, or should I be concerned that something caused it? I was expecting the bulb to go soon, because we're getting past 3500 hours. Should I be worried that the bulb actually shattered? It's suspended from the ceiling, so don't want to open it in place and have it all fall onto the sofa and floor. If I have to dismount it, I can, it's just a pain because it's so high up (10' ceilings).
I've had a bulb pop in mine, also at about 3,500 hours. So now I replace them at 3,200 regardless (though I'll hang on to the bulb I pull in case I need a temporary spare). Been getting mine from Pureland Supply here in the states for years now, as they use the authentic Osram bulbs (and are usually the cheapest). If it tells you how much use mine gets, I'm on my 6th bulb.
Some things to be aware of: First, I would NOT pull the projector down from the ceiling with the glass still in it. You risk any loose glass going into the duct where the cooling fan blows air into the bulb housing. The LCD engine is all enclosed, so no worries on any damage there. Just have someone hold a bucket under it when you open the bulb cavity and remove the bulb. Odds are good that most of the glass will still be in the bulb housing you're pulling out... but when these things pop, they tend to expel powder-like shards. After you pull the bulb housing out, I recommend taking a vacuum nozzle and cleaning out the cavity, being careful not to brush against the diffuser lens that the bulb shines into. You can also CAREFULLY use canned air to blow it out, but be careful not to blow it in the direction of the duct that blows into the lens cavity. Blow it out toward the front of the projector, in the direction of the exhaust fan/vents.
Something you should look out for: When my bulb popped, it created enough force to shift the first lens after the diffuser out of alignment, causing a red line at the top of the screen. Don't panic! There's a thread here with detailed instructions on how to open your projector up and push that one lens back into place IF that happens to you. It's also a good thread to bookmark if you start getting a noisy fan, because you can get replacement fans on eBay and swap them out yourself once you know how to get to them. I changed out two of my fans.