We’ve managed to replace all the capacitors on the SGI 320 logic board and it works. This was the most difficult de-soldering we’ve ever done. The board is much thicker and with large ground planes distributing all heat out of the de-soldered parts. I’m really surprised that the board survived the surgery.
We have even been able to setup the firmware properly to load Windows 2000. It looks like the unit was used only for demo purposes in Czech SGI so nothing interesting is installed on the hard drive.