I don't have a terminator :-/ But anyway the EN/SC doc says it's auto-terminated.

Just checked the HD SCSI id , thanks for the idea, but it's 0.

So i think that leave me with the only other possible culprit (apart from the EN/SC being dead) , my only DB-25 cable… It's a iomega , came together with my zip drive. Works fine with it. I've ordered another one from another brand, will see.