Original post by: John Howard ,
All B,C, C# & D# keys on my keyboard have no sound. Help!
The B,C, C# & D# keys have no sound. The keys stopped working across the all scales of the keyboard. All the D,E,F,G,A keys work fine. It is just the B,C, C# &D# keys that have no sound. This keyboard has less then 10 hours of use.