A1200 tower PSU issue - help

[AmmoJammo]

Yes, I am feeding power into the A1200 mobo via the floppy power connector.

pardon?

what about the negative 12 volt rail?

[AmmoJammo]

are the voltages right?

you said you "wired it up to fit with the end from the dead PSU"

but then you also said "I am feeding power into the A1200 mobo via the floppy power connector"

are you saying that you're using one of the hard drive power connectors from the power supply to connect to the A1200?

does the power supply even power up? fan come on? check the voltages before you plug the A1200 in of course... :/

[AmmoJammo]

Here is the photo of the PSU i have i will test it this weekend.

I have to assume that isn't the correct connector, as it appears to only have 5 and 3.3volts.

http://pinouts.ru/Power/MotherboardPower_pinout.shtml
I assume is the connectors his old power supply had

edit:

[AmmoJammo]

well, if you think the Amiga 1200 will run off +5 and +3.3volts, then by all means, send him the power supply.

Blake was probably just not sure what power supply he had

you can see the cable here that he appears to be using:
http://www.flickr.com/photos/blakespot/2372319288/in/set-72157604300573758/lightbox/
http://www.flickr.com/photos/blakespot/2372319512/in/set-72157604300573758/lightbox/

first and last wires are missing from the connector, leaving him with Ground, -12v, +12v, +5v.

[AmmoJammo]

exactly...

but check the voltages at the motherboard connector before plugging it in to the A1200, or you'll quite possibly end up with a dead Amiga!

If you connected your old wiring adapter to the ATX powersupply, simply matching colours, you would have been applying 3.3volts, where its meant to have -12volts... :/