Lamp Lifespan - Where Are You? - Page 4 - AVS Forum
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post #91 of 214 Old 05-03-2007, 04:24 PM
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Just about all of them do this a little, but usually you can only see it on a pure white screen or the test screen. If you are seeing it on actual program material, it needs to be fixed.

Joe -----

The harder it is to tell the difference, the less difference it makes.

 

"I prefer the tumult of liberty to the quiet of servitude." -- Thomas Jefferson, translated from Latin

 

Also translated as "I prefer dangerous freedom over peaceful slavery" 

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post #92 of 214 Old 05-04-2007, 06:17 PM
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Quote:
Originally Posted by JHouse View Post

Just about all of them do this a little, but usually you can only see it on a pure white screen or the test screen. If you are seeing it on actual program material, it needs to be fixed.

well that makes me feel a lil better that this seems somewhat normal. and yes it is only on the test screen that i see the haze. however when my projector was brand new it did not have this haze at all. thats the reason it has me kinda worried. is this haze something that occurs with wear on the bulb or is it to do with the projector itself ? since i am getting kinda close to bulb replacement i was hoping that this is something that will remedy itself when i replace the bulb.

Sonny
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post #93 of 214 Old 05-05-2007, 07:55 AM
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I'm not a technical guy, but it can't be the bulb as they don't have right and left side preferences. It has to be variations in the chip set/polarizers/light engine. Since so many brand new ones have it, it probably isn't heat related, though with time that probably can occur and compound or confuse the problem. Someone smart should chime in for you soon.

Joe -----

The harder it is to tell the difference, the less difference it makes.

 

"I prefer the tumult of liberty to the quiet of servitude." -- Thomas Jefferson, translated from Latin

 

Also translated as "I prefer dangerous freedom over peaceful slavery" 

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post #94 of 214 Old 05-05-2007, 01:06 PM
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AE900 bought last July. 1600+ hours on econ mode with no noticeable dimming. This has been a nice change from my MT700 that went through three or four lamps before Toshiba bought it back from me.
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post #95 of 214 Old 05-05-2007, 01:45 PM
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An Optoma H30 user was up to 7500hrs and still going. In testing new lamps I've found after 500hrs they're down to 60% of the brightness of what they were new. That tapers off and you could get a usable 1500hrs, but after that the funs gone on image brightness so it's time to shell out.

Get a light meter and find out what screen ft lamberts you're watching? My guess, anyone up around 2000hrs is viewing 7 or 8ft lamberts, maybe less.

Moral of the mfg bulb specs, yeah you could get 6000hrs off a bulb but the price is a dull picture.

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post #96 of 214 Old 05-08-2007, 04:47 PM
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Panasonic PTL300U, 2200+ hrs on original lamp. I do notice when I switch back and forth between economy mode and bright mode, there is little difference so I know there is some dimming. I do not notice though in a dark room so it's not a problem.
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post #97 of 214 Old 05-09-2007, 05:21 AM
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I switched from econo mode exclusively to bright with my PT-L500U at about 1,200 hours and have left it there. Picture seems to be as bright now as econo mode when the projector was new. Of course I have no way to measure that, but I am still happy with performance and it did appear to be dimming slightly when left in economy mode.

Chris
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post #98 of 214 Old 05-09-2007, 06:23 PM
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Quote:
Originally Posted by guitarman View Post

Get a light meter and find out what screen ft lamberts you're watching? My guess, anyone up around 2000hrs is viewing 7 or 8ft lamberts, maybe less.

If I find the picture to be plenty bright and satisfying to watch, why on earth would I buy some meter to tell me that I should stop enjoying my PJ? That's like stopping by the car dealer to let him convince me that it's time to trade.....
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post #99 of 214 Old 05-10-2007, 03:45 AM
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Infocus X1a

Pedastool mounted in an open closet @ approx 13 ft @ 97'-100' 16x9

Rated 4000 hours

Lamp 1 [pack-in] 2200 hours
Lamp 2 3010 hours +/-
Lamp 3 1652 [current functioning Lamp]
Monterey Bay California

I use mine as my primary TV for everything I do, gaming etc. Its also my primary PC monitor so it runs daily for as long as Im doing anything.

Its been a great pj and Ive never actually noticed any dimming on any of the Lamps, which suprises me. Im actually about to buy an HD70 or something comperable thats 720P with a good Lamp cost to hour ratio. Im definitly not ready to drop 3K then $500.00 or more every few months for new Lamps. As it is I find that roughly one Lamp a year @ $300.00 is money well spent and I can say that Im not going back to the large scale TV market any time soon.

Im totally sold on DLP PJ's
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post #100 of 214 Old 05-10-2007, 12:52 PM
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My first pj a NEC LT240k got at least 2500- 3000hrs. per lamp.

But I can't say that for my Mits HD4000u
First lamp = 1300 and failed
Second lamp = 650hrs would start but shut down with lamp error
had it back to Mits replaced power supply and they installed a new lamp.

Third lamp again failed at about 750hrs leared that it was posistion sensitive set it on it's back and it would work just fine. Ran it this way for a 1-2 hours and put it back in ceiling mount and all was fine for about 500hrs, repeated the same as before again and got about 2000 hrs.

Fourth lamp 50 hrs. and running. This lamp looks different so maybe they addressed the problem; only time will tell.

Needless to say I will probablly not buy Mits again since they would not could not or what ever find a cure for the lamp issue. Talked with them many times and all they would do is forward the problem to the factory- Japan without any response to me.

Had it for a year and am waiting for the new crop of 1080's and will change.

Don't get me wrong their people here tried their best but the "Factory" simply ignored the questions.

Rew
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post #101 of 214 Old 05-10-2007, 07:23 PM
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Sony VPL-HS20 lamp life is currently close to 4500 hours, and still going strong. It is rated at 3000 hours. My projector is three years old.
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post #102 of 214 Old 05-11-2007, 08:00 AM
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Bulb explosion scares me, although I'm sure it's pretty rare. What happens when the bulb explodes? I assume it's a loud pop? Any damage to the projector?

If this ever happens to me, it'll scare the crap out of me.
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post #103 of 214 Old 05-13-2007, 05:20 PM
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Just replaced my AE700 Lamp after a great 1100 hours and the ordered the new lamp from panasonic but it does not fill up my screen! It is about 6 inches too small all around. I have played with keystone and picture adjustment and picture does not fill my large screen like the previous lamp.
I have even moved the projector back but it cannot give a larger picture.
Would this be a bad lamp? or what!
Thanks
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post #104 of 214 Old 05-13-2007, 07:26 PM
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The lamp would have nothing to do with the picture size. Check the mechanial zoom and any digital zoom, picture shifts etc.

Tom/guitarman
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post #105 of 214 Old 05-14-2007, 09:16 AM
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Quote:
Originally Posted by Soybean View Post

Bulb explosion scares me, although I'm sure it's pretty rare. What happens when the bulb explodes? I assume it's a loud pop? Any damage to the projector?

If this ever happens to me, it'll scare the crap out of me.


It happened to me, and it spewed a lot of gunk and dust into the projector guts and discolored the image. The projector had to be replaced.

Joe -----

The harder it is to tell the difference, the less difference it makes.

 

"I prefer the tumult of liberty to the quiet of servitude." -- Thomas Jefferson, translated from Latin

 

Also translated as "I prefer dangerous freedom over peaceful slavery" 

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post #106 of 214 Old 05-19-2007, 09:39 PM
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Quote:
Originally Posted by JHouse View Post

It happened to me, and it spewed a lot of gunk and dust into the projector guts and discolored the image. The projector had to be replaced.


My first lamp exploded and it scared the hell out of me ... About as loud as an M70 firecracker, then it chuffed out a bit of smoke.The screens on the housing kept all the bulb pieces confined within the housing though. Ive seen alot of pjs on ebay with damaged colorwheels due to lamp explosions.

On my X1a there is a small lens the light projects through that is part of the lamp housing and apparently that can shatter upon explosion and send the parts through the spinning colorwheel severly damaging it. Considering all the units I have seen on ebay I feel rather fortunite that didnt happen to me aswell.
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post #107 of 214 Old 05-24-2007, 07:12 AM
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My AE900 lamp is at 1812 hours and it's flashing red. Does that mean that failure is imminent????

KP
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post #108 of 214 Old 05-24-2007, 05:47 PM
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4,125 hours on my InFocus SP4805

Life is a sexually transmitted disease with a 100% fatality rate.
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post #109 of 214 Old 06-21-2007, 11:18 AM
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My Z2 bulb finally went at 4880 hours after about 3 years. I never bothered to clean the filter or run in economy mode.
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post #110 of 214 Old 06-22-2007, 03:41 AM
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2400 hours on my IN72
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post #111 of 214 Old 06-23-2007, 08:41 AM
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anyone else with a ax100??
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post #112 of 214 Old 06-23-2007, 03:13 PM
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I've got 578 hours on my Hitachi projector, the bulb is about a year old. Bought it last summer with 20 hours on it, didn't get it really setup and running tell about December of last year. I've got it on a Monster HTFS500 plugged into a Geek Squad UPS, so I have proper cool downtime in case I lose power. (I live in Oklahoma, the storms this month have been insane) So far no dimming, clean the filter every 50-70 hours, just because I want to see how long I can make this bulb last, always run it on normal no econo settings for me.
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post #113 of 214 Old 06-24-2007, 01:23 PM
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I got just over 3k hours on my first X1, i retired it to a closet when the color wheel got so noisey i couldn't deal with it anymore

My 4805 made it 2980 hours, and the color wheel flew off its mount... that PJ is sitting here waiting for the dumpster or ebay...
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post #114 of 214 Old 06-24-2007, 03:12 PM
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1280 hours on my PLV Z3 that I've had since July '05 and it's still running great. I'd expect that there's still some considerable life left in it but I ordered a new bulb anyways... just in case. I really wouldn't want to wait until it died and be without a projector for the several days that it would take to get a new bulb.

Watch for Home Theatre 2.0 pics coming soon!
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post #115 of 214 Old 06-25-2007, 10:39 AM
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3700hrs on the original bulb in my Sanyo XW15 bought in late 2001 (about 1750 on/off cycles).
It's on the 4th (apartment) installation; been with me through 2 countries (60 and 50hz), 3 states, 4 DVD players, and um, several girlfriends.
I'd probably notice a quite dimmer picture if side-by-sided with a new one, but it's still perfectly watchable with even a bit of ambient light. Very slight greenich vinette in the top left corner, but colors are very nice, sharpness with HD fine, and no color uniformity or banding that I can see.
I clean out the filters semi-regularly, open the case once per year to vacuum the vents, and that's it.
I'm holding onto this girlfriend, but when (if!) the XW15 ever goes boom I'll replace it with a 1080p.
cheers
Kurt
Philly
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post #116 of 214 Old 06-25-2007, 09:17 PM
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Sony vpl-hs60. Only had it for a few months thus far and just hit 200 hrs. From the other Sony pj owners, sounds like there's a good amount of life in these bulbs, maybe because of it not being a particularly bright one. Hope I can hit the numbers you folks have reached.
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post #117 of 214 Old 06-25-2007, 09:30 PM
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BenQ PE7700 at 714 hours on econ mode picture still bright.
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post #118 of 214 Old 06-26-2007, 06:38 AM
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I have just under 700 hours on my Panasonic PT-AX100U that I purchased in February. Around 600 of those hours were in eco-mode, then I began having a flickering issue, so went back to normal mode and that problem resolved itself after about a week. I have continued to run it in normal mode, but will likely toggle back and forth between normal and eco-mode.

On a related note, can someone tell me what happens when a bulb hits the end of its lifespan? Does it just gradually dim until it's useless? Does it just stop working one day? Does it explode in a ball of flames that destroys your projector?
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post #119 of 214 Old 06-26-2007, 08:09 AM
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Help, I know very little about projection TV.
I purchased a Panasonic AE700U about 16 months ago. Now the projector will not work.

The unit turns on to green, flashes green for a moments, then turns yellow, then the lamp light flashes red.

Any thoughs (private messages are easier to retreive)

Thanks,

Mark Olivier
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post #120 of 214 Old 06-26-2007, 11:58 AM
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Model: Optoma HD-72
advertised lifespan: 2000 hour (3000 on economic)
Actual lifespan: 1st bulb - 900 hours, 2nd bulb - 9 hours and counting...
Replacement Bulb price $325
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