Better Guide for Pico PSU conversion? Request for Pinouts ATX <-> STe

[sixtyeightmk2]

Hello,

 

I really like what many users on this forum have done in installing the pico psus - my problem is that I have not been able to find a 1:1 guide for what pins goto what wires on the STe connectors, and I'm really scared to fry my STe I'm converting from the UK to USA 110V hopefully soon!

 

Does anyone have a guide that would include specific pins involved in getting this setup? I've printed photos, and schematics from a few different sites, but I still don't feel 100% about going forward until I see someone that might have this info available.

 

Thanks!

[Checksum]

Hello,

 

Atari Side:

Blue=+12V

Red=+5

Black = Ground (COM)

 

on ATX side:

Yellow = +12V

Red = +5V

Black = Ground (COM)

 

You should buy an ATX extension cable and cut it. Cut Atari PSU Cable too. Then solder properly cables. Don't forget to use thermo-shrinking sheath. Even if the Micro PSU is well protected, it's better to test with a Hard Drive connected on it. Test Atari side pinout with a multimeter before connecting it to motherboard

 

And last, The green cable (PS_ON) on the Micro PSU must be connected to COM to power on. (with the hard drive, you can hear when powered on). Once everything is ok, you can use the Atari power button to connect PS_ON to COM.

 

Here is ATX PSU Pinout. I will try to upload a Photo of my Falcon later.

[exxosuk]

Maybe this will help ? http://blog.troed.se/projects/atari-st-picopsu-replacement/