How to make a cooling system using two computer power supply units
From ArticleWorld
If you happen to have some power supply units laying around (and you do not need the lab power supply described here on ArticleWorld), you may want to try using them as the foundation for a cooling system.
[edit]
Procedure
- Unplug the power supply units. Make sure they have been unpowered for 24 hours before proceeding, as they may still hold some power which could result in a pretty shaking electric shock.
- Unscrew the covers and detach them. Unscrew the fans from each PSU. They will still hang from the PSU, either connected through soldered wires, or through two plugged wires connected somewhere on the PSUs.
- Unplug the fans, or cut their wires, leaving a lot of extra slack for one, and a decent amount for the other one.
- Find the Molex connector on one of the supplies. It is a four-hole one, with a notch at its end. Cut the plug, leaving a lot of slack. You can take out the black and red wires since they will not be needed. Leave just the yellow and the black ones.
- Solder the red wire of the fan to the black one on the plug, and the black wire of the fan to the yellow one of the plug. Repeat the procedure with the other fan, using the same plug.
- Put your plug into the three fan plugs on your motherboard and test it.
[edit]
Notes
Make sure you avoid any short circuits. It may not be much of a problem if you do not solder the wires correctly: the fans will simply not work. But a short circuit may cause more trouble.