On Wed, Jun 21, 2006 at 11:00:51AM +1000, Paul (NCC/CS). wrote:
> 
> although last night i went to wack a terminator on the bus on the
> back of the cdrom device and found that there was a switch which
> said "terminate" and it was on. So it was terminated all along anyway!
> 

Another thing to check is that the scsi bus fuse is not blown, that
will cause the external bus to fail.  The fuses in these machines is a
funny looking thing - it's not your standard 3AG style with endcaps
and glass tube.  I is a little plastic cylinder about 7-8mm in
diameter with a couple of wire legs at one end.  There should be a
couple on the board (one for the keyboard/mouse, the other for the
scsi bus).  They are ridiculously easy to blow if you are fiddling
with the scsi bus while it is live.

-- 
Brett Lymn