Doug McNutt wrote:
> At 09:51 -0500 1/1/09, Dale Hoffman wrote:
>> I have a Quicksilver G4 with the ATI Radeon 9800 Pro Mac AGP 256MB
>> video Card.
>>
>> The fan has been acting up emitting intermittent whirring noises.
>> I removed it, blew it off with compressed air which worked for a while.
>> Then I added a drop of silicone electrical contact cleaner to a whole
>> in the back which - I suppose - feeds the point of rotation. This is
>> working, but I would rather find a replacement fan if I can. Tried
>> Googling on the only ID info printed on the fan which is "ATI 603AC"
>> but couldn't get a match.
> 
> No answer but I'd also like to find one.
> 
> It has a 40 mm square bolt pattern and runs on +5 volts.

You want to match it's dimensions and power ratings.  The bolt pattern 
size is usually good enough, especially for this application.  The 
thickness is important but in this situation isn't critical.  You need 
to match the voltage and current.  Fans come in a variety of flowrates 
and this needs to match the original fairly closely.  Some fans list the 
rated flowrate in CFM but not all.  You're more likely to find the 
current rating listed.  The current doesn't need to match exactly but it 
should be close.

-- 
Clark Martin
Redwood City, CA, USA
Macintosh / Internet Consulting

"I'm a designated driver on the Information Super Highway"

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