The issue you are describing is showing symptoms of a failed 1394 PHY connector due to hot plugging while the unit and the host are on which is not recommended with 1394 6-Pin devices. The failed connection might be on the host system, the cable itself, and/or the interface, or a combination of all three.
Try these 2 things first
- Replace the 1394 cable with a new one, we've seen sometimes where the cables go bad, (yes they go bad).
If that doesn't work, then:
- Replace the 1394 card on your system with a recommended card from our recommended 1394 card list.
If that doesn't work, then the unit would need to be repaired.
Unfortunately the Firestudio 2626 has reached the end of it's service life as no more parts are available to fix those units.
We would recommend contacting your local music store to see what newer options are available that meet your budget.