recycling pc parts

  koko 22:42 07 Sep 2007

this may sound a little odd but i've recently has one of my pc's upgraded and now have a few spares including a power supply, which i would like to use if possible to power scenic lighting on my model railway layout. the supply has 3vdc 5vdc and 12vdc which is ideal, however i asume that the main connectior cable has some sort of feed and swich wire arrangement on it as when ive powered up the transformer its dead, ie the fans dont run. does anybody know which wires are the feed and return switch wires please?

many thanks


  woodchip 22:50 07 Sep 2007

It will only work if there is a constant load on it, Switching it on without a load may have blown the PSU. It's what is called a Switching PSU

  koko 22:52 07 Sep 2007

oh well if its bust its bust it was worth a try, thanks for the info

  Fruit Bat /\0/\ 22:54 07 Sep 2007

ATX Version 1.2 - 20 wire motherboard connector
Pin 1 Pin 2 Pin 3 Pin 4 Pin 5 Pin 6 Pin 7 Pin 8 Pin 9 Pin 10
3.3V 3.3V Gnd 5V Gnd 5V Gnd P_OK 5VSB 12V
Oran Oran Blk Red Blk Red Blk Gray Purp Yell
Oran Blue Blk Green Blk Blk Blk White Red Red
3.3V -12V Gnd P_ON Gnd Gnd Gnd -5V 5V 5V
Pin 11 Pin 12 Pin 13 Pin 14 Pin 15 Pin 16 Pin 17 Pin 18 Pin 19 Pin 20

  Fruit Bat /\0/\ 22:58 07 Sep 2007

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