Even if I capture the "glitch" (as a midi recording) and send it to Casio, there is no guarantee as to what will be done with the two pianos that I now own. Can this problem even be fixed?
If you capture the glitch in MIDI and it can be reproduced with another piano, that might be a software piano or aYamaha or else, then it is sure the problem was recorded.
In this case the problem is probably in the keyboard scanner.
This could be a software/firmware bug, but could also be a bad soldering point on your particular device.
If it cannot be reproduced with other pianos, but can be reproduced with Casio pianos, then the problem is probably with the sound generator, for example with polyphony management. In this case a hardware problem can be almost excluded.
If it cannot be reproduced at all, then it starts to become complicated....
Before you contact the support you should collect facts and MIDI recordings if possible. The support people are probably overloaded with beginner questions ("the upper octave is always undamped, help my piano is defect ;-) and will give prerecorded standard answers if the problem is unknown to them and not documented.
You could also download the trial version of Truepianos (This runs on any windowscomputer) and test if this sounds the same.
Or try pianoteq, Truepianos might not be prepared for triple sensor actions, and might therefore produce other spurious glitches.
Peter
