Yamaha Clavinova CVP96 Plays the Wrong Notes
I am having an issue with my piano. If I play the keys individually it plays correctly with no problems. But if I attempt to play a chord or multiple keys at the same time it does not play the correct tones. For example if I play a C chord I can plan C, E, and G individually and it plays the correct notes for C, E, and G. If I play the if I play the chord (C, E, and G at the same time) it plays C, E, G, and Bb. This does this over the entire keyboard it is not centralized to 1 part.
I am baffled on what is causing this. Please let me know if you have heard of this before and what the solution could be.