Path: utzoo!attcan!uunet!tank!ncar!mailrus!ames!coherent!dplatt
From: dplatt@coherent.com (Dave Platt)
Newsgroups: comp.sys.mac
Subject: Re: MAC-II fan noise
Keywords: noise, fan, headache
Message-ID: <18280@coherent.com>
Date: 18 Jan 89 19:40:11 GMT
References: <494@phoibos.UUCP> <6186@polya.Stanford.EDU>
Reply-To: dplatt@coherent.com (Dave Platt)
Distribution: comp
Organization: Coherent Thought Inc., Palo Alto CA
Lines: 28

In article <6186@polya.Stanford.EDU> kaufman@polya.Stanford.EDU writes:
< In article <494@phoibos.UUCP> ge@phoibos.UUCP (Ge Weijers) writes:
< 
< >         ... Does anyone know how to reduce the noise, e.g. by replacing
< >the built-in fan with a silent type that is powerful enough to keep the
< >temperatures low?...
< 
< Replace the power supply fan with one from Radio Shack (part no. 273-243,
< $14.95).  Instructions for doing this were posted on the net some time ago,
< but even without instructions it is obvious once you open the power supply
< case.  The RS fan is 27 cfm as opposed to the original 32 cfm, but is so
< quiet that you think something is wrong -- because you can hear the disk arm
< positioning.

Yup... this conversion is quite effective, as long as the Mac II in
question isn't too "fully stuffed" (I'd be concerned about doing this
mod to a Mac II with more than two cards, for example).  My Mac II has
been running this way since June '87, with nary a problem.

I have the original version of the fan-replacement instructions on file
here; I'll email them to anyone who wants 'em.  Drop me a note if
interested...

-- 
Dave Platt    FIDONET:  Dave Platt on 1:204/444        VOICE: (415) 493-8805
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