Please let me know how often you have changed lamps in your projectors!!!
Well, I just changed the second lamp on my Optoma H78-DC3 after 630
hours and about 9 months (of course after the 6 month warranty). The first lamp was replaced after about 500
The first lamp was replaced because the lamp was so dim the projector couldn't adjust the brightness up high enough to display the colors properly. The bulb did not burn out and did not trigger a lamp fault indication on the projector.
The second lamp triggers the lamp fault and shuts the projector down. I can turn the projector off and then on again and the projector would start up....but not always. So I changed the bulb.
I run the projector in "normal" mode, not "bright" mode so I'm not running the bulb at high output.
Ok, I'm not being picky since I don't have a problem changing a lamp every year. Just the cost of doing business as far as I'm concerned. I just wish the lamp would last for one year. My previous Yamaha DPX-1 lamps would last between 700 and 1,000 hours with no problem, but those lamps were rated for 1,000 hours. No complaint there. (Granted, I ended up getting rid of the Yammie after 2 1/2 years after the DLP driver board blew and repairs would have cost almost as much as the Optoma I replaced it with.) But Optoma says the lamps should last for 2,000 to 3,000 hours. Does anybody think I should send the projector into the factory for a "checkup"?
After the first lamp went very dim the factory said to send the projector in for service. But if all it needed was a lamp they would change the lamp and charge me bench time + the lamp + shipping. That didn't make sense to me then when changing the lamp is so easy (even a caveman can do it). I changed the lamp and everything was OK. So I figured that was that, problem solved. But now I have this problem with the second bulb after just over 600 hours.
I'm just not having good luck with projectors