redrumloa wrote:
Now just match up voltage to voltage, ground to ground and power good to power good. .
A1200 does not have power good.
ATX power supply, cut the green wire and one of the black wires next to it as close as you can get to the connector, fit a switch between them.
Then Cut of the A1200 lead but leave about 6 inches left connected to the A1200 PSU. Strip back the insulation, this should reveal 4 wires.
Red, Brown, White and Black and wrapped around them shld ground.
Strip back these wires and measure the voltages.
Make sure none are touching Black or shld GND before you power up the A1200 PSU.
One happy strip back the the other end of the lead you cut off and join it to ATX wires.
Joining shld ground to GND on the A1200 lead so your left with just 4 wires to solder together.
[disclaimer]
white -12v
brown +12v
red +5v
black GND.
IIRC
On the ATX (allowing for standard colours)
blue -12v
yellow +12v
red +5v
black GND
you get the picture
[/disclaimer]
The switch will turn on and off your PSU.
Edit
Probably the simplest way as your A1200 is in a tower is to chop the green and black as mentioned above, join these to the switch already in your case, after removing your old PSU.
Then plug a floppy power connector on to the a1200 mobo floppy power connector. Make sure you get this the right way round. This then supplies +12 +5V and GND to the A1200 mobo, all you need now is -12V, cut the blue wire, solder it to a small nail, insulate and stick it into the center hole in the a1200 power connector on the mobo.
