If that 9x00 includes 9150 logic boards (80 or 120) and you find that any of them are defective, please don't throw them away before contacting me. I have a hack in mind which requires the FAT AMIC chip, and the probability of that being the failed component on a failed board is pretty low. I am assuming you would want to keep the working ones or know folks in Australia who would want them.
If you go back for the compacts, and you remember and have time, would you please take a glance and see if any of the Pluses or SEs have what looks like a mini-centronics (26 pin) connector coming out of the lower right-hand vent. I'm still looking for the near mythical docking card for the Outbound Model 125. Not sure there's much chance that an Apple dealer will have been dealing in Outbound stuff, but places like ComputerLand used to do both, I think. A Plus or SE with the docking card installed will not boot up. It lacks ROMs, which are in the dockable Outbound.
Thanks.