I have a Telex 7 bay duplicator with 2 bad drives. I have replaced them with sony drives, however, the unit does not recognize them. What could be the problem. Telex no longer makes this unit nor replacement drives. the unit is 4 years old.
Welcome to the forum.
What exact model of drive did the unit come with? What did you try to replace them with?
Most duplicators require the exact same model of drive as a replacement, and those drives need to sometimes be running special firmware.