The Yamaha AN1x Synthesizer mailing list

I just found out that one of the notes on my An1X is acting up. :(

At first I thought I was making mistakes in my playing. Sometimes it 
triggers and sometimes it doesnt. Sometimes it sends a really high 
velocity (127?) and sometimes it behaves normally.

What should I do?

Have you run into this problem? Do you have any advise on diagnosing 
the cause? Should I send it for servicing and hope they can fix it? 
What sort of place should I send it to?

Thanks,

Jerry