I know just how that feels Beaky. I had this experience twice with Yamaha myself. Both time the repairs took well over two months.
The first time was my PSR740 for a broken pitch wheel. I waited 11 weeks because the authorized repair center was not able to get the part it needed from yamaha Japan. What was particularly disheartening was that in the end I found out that the offending part was a common potentiometer avaialable at any Radio Shack. Had I know or been told I would have repaired it myself, instead of waiting all that time for a "Yamaha" part.
The second repair took even longer and actually it never happened and I wound up getting rid of my PSR2000 for that reason. Both the OS and floppy in my 2k went sour and I waited and waited for a repair but it never came. 3 months later my dealer regained possesion of the 2000, I got a full refund, and I went on to purchase a workstation with the funds.
I wish I could afford to have 3 top quality arrangers. I only play out occasionally for now but I really need a backup to my Pa80. In some ways I want to just go out and grab the Tyros, but my past experiences with Yamaha service for their arrangers has slowed me down and made this an agonizing decision for me. The logical choice would be to get a PA60 to backup my PA80, so that I can use the same files, but on the other hand I really like the versatility of having two different types of arrangers. Roland just doesn't have anything that will meet my needs either, and I still haven't been able to see a Ketron locally. When push comes to shove, I might wind up with the Tyros, but in addition to my concerns about potential factory repair delays I really hate the thought of paying that much for a board that doesn't allow me to use my plug in boards or have sampling. The VL acoustic board has become my staple for playing sax and other solo acoustic instrument sounds. If the Tyros had those features, I could make the transition a lot easier by being able to part with my Motif... The saga continues and I'm long winded once again..lol
AJ
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AJ