kawai digital piano 250 some keys not working please help..?
Moderators: Feg, Gill the Piano, Melodytune
Non-working Keys on digital piano
I dont know much about piano (digital or Acoustic) other than learning to play. But professionally I deal with the repair of a great many electronic devices and your problem sound exactly like the old problem of dry joints (for those who dont know these are joints that the solder has cracked round the connection and electricity no lomger flows) Under the keys of the keyboard you will find a printed circuit board with the contact sensors on it. Look for fine cracks in the joints to the sensors and resolder them. In addition the copper tracks on long PCBs sometimes crack. In either case use a strong lens to inspect the sensor board inch by inch.