Atx power supply modification

After needing a 12v power supply i decided to create one from an old atx power supply that was working somewhat.

I had lying around a couple of old atx power supplys and this one was the nicest of them all, all i needed to change was:

  • The output capacitors were leaking
  • The fan was making an horrible noise
  • Bigger wires so there wont be a problem
  • Change fan wires to always be on

As you can see on the scematic, this is how everything is wired inside the atx psu.

Thing that needed to be added:

  • Add On/Off switch to input side
  • Add On/Off switch to output side for extra safety
  • Add four output terminals for all the connections
  • Add labels for ease of use

I forgot to take pictures of all the steps but you get the idea, remove some wires, change around other wires, connect new ones, heatshrink were needed and you get a beautiful looking atx power supply. The atx short circuit and other protection features were kept intact for reliability and accidental mistakes.