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From: d_alvear@jhunix.HCF.JHU.EDU (Dom Alvear)
Newsgroups: comp.sys.atari.st,comp.sys.atari.st.tech
Subject: Re: Need a cooling fan for my 1040ST with ZRAM upgrade
Message-ID: <7869@jhunix.HCF.JHU.EDU>
Date: 31 Mar 91 20:27:42 GMT
References: <1991Mar26.192606.8264@cs.wayne.edu>
Followup-To: comp.sys.atari.st
Organization: The Johns Hopkins University - HCF
Lines: 48

>> J. Harris writes about how his ST with ZRAM stops running after a few
>> hours, then when left off for 2-3 hours, boots fine.
>
>I've been having the same problems with my ST.  I figured it was heat,
>but I can't seem to find a fan for the thing.  I remember a device
>called COM-COOL that sat on top of the Commodore 1541 disk drive, someone
>recommended that I get this as it fit nicely on a 1040.  But, I CANT
>FIND ONE ANYWHERE!  I need a fan that sits right over the power supply
>on the 1040 (where I could probably fry eggs if I wanted to), but the
>supply also has to have its own power pack, as I don't want to tax the
>power supply any more than I am already.

[stuff deleted...]

>Patrick B. Haggood
>Wayne STate University
>Detroit, MI
>Physics - Class of 1991 (-2?)

This was posted some time ago on comp.sys.atari.st.

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Installing a fan on my 1040ST was a sinch.  First, I took the sucker apart.
(Warranty???  What warranty???  Oh yeah, do this 91 days after you buy the
machine.)  There is a beautiful place to mount the fan between the power 
supply and the disk drive right on top of the RF shielding.  I just cut a
hole there about 2"x2" and mounted the fan with 4 screws.  Since it was
a 12V DC fan, I just connected one wire to the +12V spot on the power supply
and the other to the negative spot.  These are labeled on the power supply
so you should have no trouble finding them.  Then I put the thing back 
together.  It fits perfectly.  Just go to your local Radio Shack and buy
the fan.  I think they have 2 models that will fit in this small space.  I
can't remember the part number.  It is about 3"x3"x1.5".  It is really
quiet too if you put a small resistor inline or a potentiometer to slow the
fan down a bit.  Even at full speed, however, the bugger is relatively 
quiet compared to a pee cee fan.  Bonne chance!

Chris Mauritz
cmm1@cunixa.cc.columbia.edu

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Hope this helps!

Dom Alvear
d_alvear@jhunix.hcf.jhu.edu
alvear@crabcake.cs.jhu.edu