> Ummm I find that diagnosis _extremely_ unlikely.  The scsi bus is,
> technically, an open collector bus.

essentially

> If it is unterminated then there
> is supposed to be no voltages on it -

Ah, but you forget that a SCSI bus is correctly terminated at both* ends.

> this does not preclude the bus
> voltages just floating about and happening to make things work.

and thus one missing terminator still leaves it staticly OK - but
liable to reflections which usually don't cause a problem if the
bus is short (for appropriate values of short) but cause increasing
failure rates for longer or faster buses.

BTDTGTTS

Andy

* cue for the standard saying about the _three_ terminations needed for a
SCSI bus ...