Someone with a dimming bulb over 300-400 hrs should pull it and take pics of the reflector assembly.
My Ht1000 and Lt240k had this issue with overheating and bulb failure.
The reflector showed signs of the over temps, I would do it but mine is ceiling mounted in such a way that it would be a PITA, and I have a lot of SNOW removal to contend with before settling in for a double feature this afternoon
When I first got the unit I commented on how hot it got, I am no engineer but have had 7+ PJs. What I will say is, if this unit has the adequate volumetric efficiency the metal plate above the bulb assembly (inverted) would not heat soak as much as it does, you can barely hold your hand on it after 1+ hours of use...and that is surface, internals must be 20+ degrees to account for that level of saturation at a min.
There is no reason a PJ of this footprint should saturate like that, in my buying I figured the size dictated less "turns" of air and lower fan speed by size. As big as it is is should be cool to the touch. My Mt700?Pe7700 which was a turd
ran cooler surface and exit temps than this one, slightly louder but acceptable, we all know those PJs have a big bulb problem more lkely related to a poor ballast/supply problem.
But generally you don't post " ok today was a perfect PJ day, no problems, talk to ya later"
The cross section of posts will give a false positive for errors based on that fact.
Maybe a poll is in order to track this, and as this thread has developed I already can say that Optoma lost 12000 in sales because of it. The bottom line does more to motivate a manufacturer than anything else.
if reports on "true" internal UHP lamp pricings are correct, then Optoma is in a position to handle this properly. 12000 vs 300 max if the accounts were reported to have been solved acceptably by Optoma.
Properly struck and cooled the lamps in PJs should have no problems going 1500+ hrs being cconsiderably dimmer at their half-life. Again, look at Sim...why don't more manufacturers take a page from their playbook.
One of the first if not the first qualifications you apply to a PJ purchase is bulb life and life....if you were a vendor, you would think a great reputation would go a long way towards helping move your product.
I realize that the lamps=revenue... but early failures and problems=brand bashing and abandonment. It's a double edged sword...
I still love this picture, but as I have said, I am sick of manufacturers hiding behind the one big caveat of FP...if they were smart they would market and support it better as an industry and their sales would increase, negating the reasoning behind engineered obsolescence...