Last night, the highest Ab on the lower manual wouldn't work. It was an outdoors gig, not too humid and about 75 degrees.
Then, at a gig this morning, it was working again. I haven't spilled anything on the keys ever, so does anybody know what the problem could be?
Also, I just posted a few weeks ago about another error I had where notes stuck and the program randomly changed. Is it perhaps time to get this keyboard serviced or buy a backup?