So I recieved a IIci. It is missing the snap-in hard drive bracket and had some kind of IBM "government property" SCSI drive just sitting in the space where the bracket is supposed to be. This drive won't even spin up, and was jumpered to SCSI id 5.
I replaced it with an (untested) 20Mb Quantum drive out of a 20SC external enclosure, jumpered to SCSI id 1. Machine starts up and goes to the "no system software found" question-mark disk. I booted a System 7.1 disk tools floppy and ran HD SC Setup, and it is unable to find any devices on the SCSI bus.
Tried again with SCSI id set to 0, same thing.
I don't know the jumper settings to set termination on the drive, so that may have been the problem?
So then I took the drive (and cable) out entirely (thinking the lack of termination might be the trouble), and plugged a SCSI Zip-100 drive into the external SCSI port, set to SCSI id 5, and booted the disk tools floppy again. Again, unable to find any devices on SCSI bus.
There is also no startup sound, presumably due to the leaky SMD electrolytics in the audio output section. There is a little other capacitor funk here and there, but the battery hadn't leaked (I removed it).
Would a bad cap somewhere cause the SCSI bus to stop working? If so, which one(s)? I'll replace just enough caps to see if I can get SCSI working before I decide what to do.
If it's probably just caps, I'll keep it and fix it. However, if it's a bad SCSI controller chip or something else equally dire, I'll try to send it back and get my money back (it was advertised as "tested" on the auction, which I guess just meant that "da gween light camed on").
Thanks folks. I really appreciate the help.