I have a Korg digital piano that I bought back in '91. It is a full-sized keyboard with weighted keys, back in the day when touch-sensitive action was a big deal. After many wonderful years, this piano is starting to give me some grief. About a year ago I had trouble getting sound out of it. Funny thing is, this seems to be random. Sometimes I turn it on and get the usual sound out and at other times the sound is so faint I can hardly hear anything. I've tried hooking it up to my stereo system, hoping that some external speakers might work but no such luck. Yoday I turned it on and heard an outrageous amount of static for maybe 30-60 seconds after which it went back to normal.
I'm planning to call Korg tomorrow to see whether or not they have a facility nearby that can take a look at it. I'm guessing though that if it does need a major repair, it might not be that cost effective, but I can't say for sure. Anyone have experience dealing with this sort of thing?