Originally Posted by Jester435
I wouldn't really call it an overheating problem. I ran the projector for easily 12hrs on Sunday with AFC & NFC championship games and it didn't overheat and shutoff. If it happens again then it goes back to amazon for a new one
Yeah, your altitude is actually below the recommended 1500m threshold, so you shouldn't need to use High Altitude mode.
Unless other aspects of your environment are extreme? Particularly hot room, perhaps? Ceiling mounting the pj also contributes here since due to the old 'hot air rising' principle!
I'm about 10% above the high-altitude threshold and still
leave it off because, like you, I find it makes the otherwise quiet projector very noisy. (It forces fan-speed to 'full' continuously). I've never had a shut-off; though I'm still table-mounted; and the room is climate controlled. If/when I ceiling mount, I may reconsider since it'll be further away from where we sit.
I almost wish there was an override setting that allowed us to choose the fan speed: I wouldn't mind an extra bit of cooling from the fan (since it's not noisy), but cranking it all the way to full-speed sounds, like you say, like a jet engine :-)
Incidentally one fan-speed-related thing I noticed since upgrading to FW 1.08 (from 1.06): in SmartEco, the 'High Altitude' mode was previously not honored: on startup, the projector fan would go to full speed for a few minutes, and then drop down to non-high-altitude-mode fan speeds thereafter. In other lamp modes (Eco/Normal), the fan would
run at full speed if High Altitude mode was on.
This also explains why in my review
(which needs a bit of updating now - things have changed, mainly for the better!), I noted that "SmartEco sounds like the PS3 at idle (not particularly loud); while running at Normal or even Eco (!) modes is much louder; comparable to the PS3 under heavy load" with High Altitude mode on.
With 1.08, SmartEco now sounds like the other modes with High Altitude mode on.