Hi guys, i'm a newbie to this forum, and wondering if anyone knows why my Tape Drive has trouble communicating?

I have a G4 1GB ram 1.25mhz with scsi card (the small thin looking connection - wide scsi I think) and have Retrospect that does recognise the tape drive, but when I come to backup, it will probably do 700mb and then say it has trouble communicating! Can this be a scsi problem or a Drive problem?

I have used brand new un-used tapes and has been working great for ages (It is past its warranty) I'm sending it to a company who specialises in repairing tape drives, but they will only tell me what they have repaired, rather than tring to fix my problem!!!

If anybody can help with this would be very much appreciated!!!1 Cheers Guys