I bought a panasonic pt ax100u projector which has a bulb expected to live around 800 hours around 700 it started to shut off once then have to be turned on and worked fine…well after 4 months later and having to turn the darn thing on 5 times before it stays on im curious as to if its a bulb issue or something else. I thought bulbs just died or dimmed for like 2 weeks then died…any thoughts?
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I don’t know that projector, and while it could be the bulb may be some other issue. Not much help so far … eh?
Consider three things … first, 800 hrs is very low. 2000-3000 hrs is more typical (although bulbs can blow at any time … particularly if the projector is shut off before inadequate lamp cooling, subject to power cuts, run too hot for too long, etc).
Second, bulbs do generally slowly dim, although they can actually shatter. In recognition of the latter I have read that some projectors have a lamp usage timer that will trigger a visual warning at some set point, and then actually shut down the projector at the limit set by the manufactuer. I don’t believe this is common, but it is done. That said, it would be a poor scheme that still allowed restart after multiple shut downs. But you never know …
Third, consider some type of cooling related problem (e.g. a plugged or semi-plugged cooling filter). That said, this is usually a go/no go based on triggering the protection circuits because of heat rise, rather than an intermittent thing. But maybe …
The real test would be to try putting in a spare bulb (you do have one by now, right?) and see if it cures the problem. If no … it’s something else. If so, it was the lamp.
Except for if you change the lamp — in which case you probably have an answer as to whether it is the lamp or something else — you probably should check with Panasonic support or the dealer you bought it from and see what they say if you describe the problem.
Good luck.