Yamaha Clavinova CLP 100 - No Sound
I have an old Yamaha CLP 100. Over 10 years ago, my dog chewed through the power cord. Before that, the piano worked just fine. I have kept the piano and just recently had the cord repaired. When I turn on the piano, there is a brief squealing noise, and then nothing. The red lights above the buttons are on and will change when I press different buttons, but when I press the keys there is no sound. I seem to remember that the unit would get a bit warm when it was working properly, but now there doesn't seem to be any sort of "warm electrical hum" going on at all. Does anyone know what might be wrong? Thanks.