[kg109]

First off, I know there is a thread running right now about the ever-popular power supply chirp, but I have a squeak/chirp coming from my upper rear exhaust fan (DP 1.8 G5).

I came on here quite a while ago asking about this and someone here gave me a Mac part number to a new fan unit. I called Apple and of course "they had never heard of this problem" (and wouldn't expand on the supposed problem), but he took the part number and $40 later I had a new fan assembly.

Problem was solved....for a few months, then the squeak came roaring back. It's very intermittent, but incredibly annoying since I use my machine 8+ hours a day (and now even more annoying since I recently moved the G5 on top of my desk).

Anyone else have the fan that squeaks? To determine if the sound was coming from the fan, I simply stuck a paint brush in the fan and the sound immediately stopped. Let go and the fan kicks right back in....then squeaks like hell...sometimes.

I guess the only solution would be if anyone knows whether or not Apple has addressed this with an updated fan unit. Anyone know?

And yes I have taken my machine apart and carefully cleaned the fans with compressed air, etc. Still the same result.

Thanks for any input.

[achaete-scute]

I got the exact same problem. Using a 2.3 dual. Like you said, it's intermittent. In my machine it's starting usually after a few hours.
My impression is it's the ball-bearings in those fans. I haven't contacted Apple yet - I somehow expected them to say just what you report.
I was wondering if it's possible to access the ball bearings of the fans? Maybe grease them a bit? Replacing a $40 fan every couple months is clearly not an option.

Best,

[Gee4orce]

I also have this problem . Very intermittent.

[Dark Helmet]

I had the same prob with my power supply fans so I had apple replace the whole unit.

[merp]

rev a 2x2, my fans do this intermittently as well. it comes and goes. it's been gone for weeks. I think it's temperature related, as it's done it much less now that it's warmer.

[nerd]

I had this squeak from my G5. It was the video card fan. It eventually died and I had to replace the fan.

[travis coats]

I have the same problem, I am using a Dual 3.0gHz Mac Pro tower and use it 5-8 hrs as you do. This is a very annoying problem since I use my machine mainly for audio production.