OK - so we have a 'DEAD' 12 year old Gravograph LS900 on our hands (Parallell cable). The laser itself is functioning mechanically but NOT communicating with PC - the troubles began with Network / Windows upgrades etc just after New Year. Technician from Gravograph has been - unable to upgrade to USB board - tried various firmware versions - NOGO Anyone got suggestions for WHAT we could do with it ?? As mentioned the LS900 is technically sound after service but we can NOT get parts for it - suspect COM port failure of some kind. Anyone got an old LS900 we can scavenge parts from or vice versa ??