AT&T 6386 WGS, Olivetti 380 computer, power supply schematic needed

[Sentrytv]

Good afternoon

I believe I have posted before with a question about a keyboard for this computer (386-20),
but now I have a question about a schematic diagram for the power supply.
I am looking to repair the power supply which is currently dead, outputs about .5 V -.5 V and that’s it.
Nothing obviously open or shorted. Somebody did have their hands in it prior to me, replacing or at least soldering various transistors.

My issue is:
 I would like to find a schematic diagram for this so that I can do repairs myself.
Or at the very least, connect an AT power supply or hook up an ATX power supply to get the computer running.

I would need to know what voltages besides the obvious 12 V, 5 V , -12 V ,-5v needed to run this system.

If anyone has experience performing such a task, 
Please contact me directly if necessary.

 I won’t bring it to the workshop unless I can find someone who knows, and I have a schematic diagram in hand.

Thank you 
Mike Rosen


Sent from:
My extremely complicated, hand held electronic device.