Subject: Re: 3/80 Power Supply
To: None <>
From: Adam Kropelin <>
List: port-sun3
Date: 04/19/1999 07:36:08
At 11:47 PM 4/18/99 +0000, wrote:
>running again ... does anyone know where I might find a replacement? I
>had any luck locating one for sale.

There is some info on using a standard PC power supply with a 3/80 at the
Sun3 Archive:

For some reason, the author doesn't connect the -12 VDC line and notes that
this causes the serial ports to be inoperable. There is -12 VDC available
on the PC power connector (pin 4, blue) so I'm not sure why he didn't
connect it. Perhaps more current is required than most PC supplies can

There are some surplus outlets which often sell slimline PC power supplies
which might actually fit inside the 3/80 pizzabox. See BG Micro
( and Marlin P Jones Asoc ( to
begin with.

Good luck.