Hello, I don't know if anybody can help but here is my situation. I have a T3 since 1990) and it has worked flawlessly untill this year. I took it apart to repair a broken programming button and now when I start it up its locked up on the first screen. It has been in a Korg service center for two months and they don't have a clue. Does this sound familiar to anyone? Any suggestions would be helpful.

Thanks,
D. E.