Thanks.  The quick test isolated it to the fan.  Sound reduced a  
little after I pulled screwdriver out so I'm thinking maybe a ball  
bearing wearing out.

Jay
On Aug 8, 2009, at 12:10 PM, MegaZone wrote:

> Quick test - unplug it, stick something in the fan to stop it from
> spinning, plug it back in. If you still hear it, it is the drive. If
> not, it is the fan. Pull the blockage out to let the fan spin,
> hearing the noise now confirms it is the fan. Better to do it this
> way than to stick something into an already spinning fan.
>
> You can also open the case which will let you better localize the
> sound, and you can unplug the fan and power up to see if the sound
> goes way, then do the same with the drive (with the fan connected).
> But the first test is possible without cracking the case.



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