[bdimag]

Projector is a Mitsubishi XD490U

From what i remember, it started around the same time as another issue which was the result of a 'bad' bulb in there... I say bad bulb because I had called mitsu, not about the noise, but about how the projector would shut off when it was upside-down (mounted to the ceiling); they said because it wasn't ordered from an authorized dealer (oops), it was a bad bulb and they couldn't help any further... that issue is gone w/ the new bulb but the noise continues.

any ideas? if you listen to the sound you can hear the fan noise separate from the buzz...

we have 10 of these projectors total, and this is the only one that makes the noise... it's really loud and annoying.

[bdimag]

maybe i jumped the gun here... i have the warranty form and hopefully it's still covered... it's 3 years and they're probably about that old. before my time here and that was 2.5 yrs ago.

[kiwiguy]

Sounds like a bad GPU fan, and I would assume the projector would have a GPU as well as a separate (quiet) cooling fan.