Originally Posted by stef2
Losing power while the PJ is on is supposed to be hard on the lamp. It happened to me once when I unplugged my JVC without paying attention. I waited a few hours for the lamp to fully cool down before turining the PJ back on. No damage that I can see or measure in my case, but it might make the lamp more fragile or dimmer. I wonder how much of this is true, though. It might be more of a problem if it happens many times, for sure.
Originally Posted by Mike Garrett
Most likely you will be fine.
Originally Posted by lovingdvd
Don't worry. It'll be fine. I've heard that the primary reason the fan runs to cool it down is so that its available to be turned back on quickly after it is powered off, like if you power it off accidentally or change your mind.
Originally Posted by Javs
Its actually because when the cooling stops suddenly there is no more ventilation to stop any runaway thermal buildup. The lamp will actually continue to raise in temp and the surrounding parts will possibly melt, or overheat. And heat isn't good for anything.
So, the fan runs after shutdown to make sure that doesn't happen.
Same thing actually happens with a car engine believe it or not. It will actually raise in temp when you shut it off for a good few minutes, then it will begin to cool down.
I appreciate the replies, guys.
My room is generally fairly cool to begin with, and the projector is out in the open, suspended from a ceiling beam across the vaulted ceiling, so nothing blocking anything, anywhere. I'll test it out later this morning. Power was out for an hour and a half. So hopefully, I got off easy...
I would still like to go ahead and get a UPS to protect the Projector in this type of situation. Any specific recommendations on a unit, or what specs I need, to provide adequate power?
Again, the RS400 will be the only device on this UPS (the nature of my setup has the PJ's power supply remote from any other device, and really can't be changed).
I posted on a UPS related thread in the Audio section, and got this reply:
The VA ratings are volt-amperes, for a load that is at least partly reactive. The actual power rating is much lower. One APC 450VA unit, for example, is rated at 255W.
The lamp in your projector is rated at 265W max. I'd guess that you'd want at least a 600VA (330W) UPS.
I hope that the projector doesn't draw a lot of excess power while it's starting up. I once stupidly connected a small laser printer to a UPS. The printer, while starting up, tried to draw more power from the UPS than was available. No damage, but the UPS was unhappy.
All I could find in the manual is:
380 W (during networked standby: 1.5W (when all wired network ports are connected), during standby (Eco Mode): 0.4W
So any suggestions? What are you all using for this purpose?