A1200T floppy drive(s) problem

[orb85750]

OK, I finally got this A1200 tower working, but there is some problem with the floppy drives that I don't understand.  Both with the internal drive (DF0) and an external Amiga drive that I connect (DF1), I get the following when I put in any perfectly good disks:

DF0:?
DF1:?

Is something configured incorrectly?  Is there some easy fix to this one?  These disks work fine on my A2000.  This system is Blizzard 1260 (*maybe* -- PCB says so, but it's identifying as 68040) with ONBoard busboard.  Thanks, -Dave

EDIT: It's OS3.1

[orb85750]

Very strange.  Everything is connected properly (and the external drive and disks work fine on my A2000).  The problem appears to be sporadic, because the main floppy drive started working again after powering down, then back up, and then doing an additional soft boot.  That's a strange solution, and I don't understand it.  The system seems to be pretty flaky --  I think I need to do more testing this weekend.