My Casio Sounds Like a Computer Virus, and I'm Not Sure That's Normal.

[That One Piano Guy]

So I've had this Casio CTK-900 for 10 years, and it hasn't failed me up until now. The day before, the sound and software worked just fine. Now, no matter what I try, the keyboard sounds like a computer virus. When I play through a MIDI cord, however, everything sounds fine, albeit a few keys play longer than normal (no specific keys, just random). It's been working for a long time, and I really don't want to buy a new keyboard right now, but I think the thing is at the end of its line.

 

[Biggles]

Probably time to bit the bullet and for you to became That Two Piano Guy.

Opening it up and cleaning all the contacts may help and additionally a full reset often helps.