CurtPalme.com Home Theater Forum

abishek · Joined: 06 Mar 2014 Posts: 2

Got a new JVC DLA-X55 projector , the guy who installed it says despite what i think that the bulb problem is only in the older bulb type projector and that a ups is not need even if there is a sudden power outage nothing will happen to the projector.

As far as my understanding goes with frequent powercuts, and switching off the projector without a proper shutdown reduces the lamp life, Please advice Smile

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JVC DLA-X55R Home Theater Projector Review

As per the manual

**kal** · Posted: Thu Mar 06, 2014 7:36 pm Post subject:

When you turn off the projector via remote the fan continues to run for ~60 seconds. You need to not unplug it during this time. For the same reason, a sudden power outage is not a good thing.

Take a look here:

http://www.curtpalme.com/forum/viewtopic.php?t=34335

General consensus is that you can use a UPS but you better make sure it's a good one otherwise it'll probably do more harm than good. Unless you have frequent power outages during the times you like to use the projector, it's probably not worth it.

Kal

**Curt Palme** · Posted: Thu Mar 06, 2014 8:25 pm Post subject:

If you have 'frequent' power outages, I'd absolutely use one. Also remember that the batteries in the UPSs last about 5 years, usually more like 7, but it's amazing how many people forget that UPSs have batteries in them.. that are dead... until they actually need to use the unit.

ecrabb · Posted: Thu Mar 06, 2014 8:26 pm Post subject:

In spite of the general consensus, I think I'm going to go ahead with a UPS. I've had, I think, four power-outages now. So far, no problems, but I still have a problem with it conceptually.

When the power is interrupted, it leaves a blistering hot lamp sitting inside a small, confined space, near plastic and heat-sensitive components. It's true that it's likely the projector was designed to tolerate such a scenario, but how often? At what long-term cost? Maybe it doesn't shorten the lamp life explicitly, but I have to turn it back on again, that's another lamp strike. Lamp strikes shorten the lamp life.

Sorry, but I'm not buying into the whole "more harm than good" idea. If line-interactive modified square-wave UPS'es were fine for my expensive computer with sensitive memory, processors, hard drives, etc., why wouldn't it be fine for a projector? The computer and projector both have very similar power supplies. That thread was derailed with all the bickering and nobody ever answered my question about how the cheaper UPSes were bad.

Yeah, I get that online true sine-wave UPS's are superior, and you have a mission-critical application like a server in a data center, and the budget to go along with it, then good commercial gear only makes sense. On the other hand, I don't see how this isn't a case of "something is better than nothing". Which is worse? Power interruption with red hot lamp in confined space? Or, cheap UPS for a few seconds (for a short interruption) or a minute or two until I can gracefully shut the projector down and let it cool properly?

The line to my projector runs right through my equipment room. I'm going to cut the line and install an outlet on the run from the panel, a plug on the run to the projector, and put the UPS between on a piece of OSB on the ceiling joists.

Cheers,
SC

abishek · Joined: 06 Mar 2014 Posts: 2

Thank you

**kal** · Posted: Fri Mar 07, 2014 1:22 pm Post subject:

Let us know which UPS you end up buying SC ... I'll be curious!

Kal

nuttall_chris · Posted: Fri Mar 07, 2014 1:30 pm Post subject:

ecrabb · Posted: Fri Mar 07, 2014 6:08 pm Post subject:

**kal** · Posted: Fri Mar 07, 2014 6:17 pm Post subject:

Let us know how it goes Steve. For $120 or so it's certainly a nice piece of mind in case of power outages. The good news is that the VA rating doesn't have to very high. You just want enough time to be able to shut down the projector gracefully (30 seconds to pick up the remote) and then about another 60-90 seconds for the projector fan to cool it off.

Kal

ecrabb · Posted: Fri Mar 07, 2014 8:10 pm Post subject:

**kal** · Posted: Fri Mar 07, 2014 8:18 pm Post subject:

True.

Gives you enough time such that you won't come running out of the bathroom with your pants around your ankles, stumbling around in the dark, to quickly shut down the projector. Wink

We're in a new development and power used to go off/on like that about once every few weeks (I got really sick of resetting 15 clocks around the house). The good news is that it only seemed to happen during the day when they're working on the grid - never at night when I was using the projector. Now that the neighbourhood's almost done, it rarely happens anymore.

Kal