Output Enablers now sells similar fans for cheaper than you can make yourself. You can get to their web page by clicking on the name above, or you can send them e-mail at oe@well.com.
| Radio Shack part number | Description | Approximate price |
|---|---|---|
| 278-766 | Disk Drive Y-adapter power cable (10") | $2.00 |
| 273-244A | 1 9/16" DC Brushless Micro Fan (12VDC input) 3.5cfm airflow | $14.99 |
| some solder and a soldering iron | ||
| a bit of electrical tape | ||
| some 5 minute epoxy | ||
| a 68040 Heat sink | ||
Radio Shack Standard
_________ Color Code: Pinout
/ o o o o \ 1 = yellow 1 = +12VDC
|_________| 2 = orange 2 = Ground
4 3 2 1 3 = black 3 = Ground
4 = red 4 = +5VDC
Please note that the wire colors may not be standardized on these
parts. I'll be using pin numbers to identify wires in what follows:2) Snip off all four wires for one of the arms of the Y cable. Snip them near one of the female connectors (the female connectors actually fit inside the male connector -- female refers to the electrical contacts, not the mechanical aspects of the connectors themselves).
3) Twist the Red wire from the brushless fan together with the free wire from pin 1 of the Y connector. Solder the wires together, and wrap them with electrical tape.
4) Twist the Black wire from the brushless fan together with the free wire from pin 2 of the Y connector. Solder the wires together, and wrap them with electrical tape.
5) Wrap the free ends of the other two wires (pins 3 and 4) in electrical tape so that they don't make contact with each other or anything else.
6) Mix a small amount of 5 minute epoxy and apply it generously to the small silvery "Radio Shack" logo on one side of the brushless fan. Be careful not to let any epoxy get outside of this silvery part, or your fan will not work when the epoxy is dry.
7) Lay your heat sink with the fins pointing up on a table. If you are using your Apple-supplied heat sink, make sure the clip that holds it in place is kept with the heat sink. Center the fan (epoxy side down) over the heat sink, press them together, and let them sit undisturbed overnight.
2) Unplug the power connector from the hard drive.
3) Plug the power connector from the hard drive into the male connector on the fan assembly.
4) Plug the female connector from the fan assembly into the hard drive.
5) Power on your computer and make sure that both the fan and hard drive spin up.
6) Power down your computer.
7) Attach the heat sink to the 68040 in the normal manner.
8) Close up your computer and enjoy your fan-cooled CPU.