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From: pbh@jake.cc.wayne.edu (Patrick Haggood)
Newsgroups: comp.sys.atari.st.tech,comp.sys.atari.st
Subject: Cooling fan easy and it works!
Message-ID: <1991Apr4.130021.18125@cs.wayne.edu>
Date: 4 Apr 91 13:00:21 GMT
Organization: Wayne State University, Detroit
Lines: 32
Originator: pbh@jake

I just installed a Radio Shack muffin fan (part # 273-243B) on my hot 
ST and I can report that it works like a charm.  I left the machine on 
all night and it's still blowing cool air.  

Installation was easy.  I went for functional instead of pretty, so the
fan is on top of the ST rather than inside.  My ST would flake out after
a couple of hours and the spot on top of the ST over the power supply
would feel extremely hot.  If I shut it down for 10 mins, it would work
fine.  I drilled two holes in the top of the ST over the power supply 
to screw the fan to the case. I drilled a third hole to run the wires
through the top of the case.  Then, I cut and soldered these wires:


            -----red wire ------ / -------- red wire ---

				   ---------black wire ---  disk drive
fan                                                         power
							    connector
            ------ blue wire --- / -------- black wire --- 

                                   -------- black wire ---


The ST has stayed cool all night and I'll bet this even makes her last
longer.  Highly recommended for Z-ram owners.  This cost me about $15; 
you can probably find a 3in 12V DC fan cheaper at a real electronics 
store, but they're hard to find around here so Radio Shack had to do.
-- 
Patrick B. Haggood
Wayne STate University
Detroit, MI
Physics - Class of 1991 (-2?)