Please can anyone help me with the circuit diagram for the key contact board circuit diagram of Yamaha moxf8 keyboard. A technician did a poor solder on mine and I’m trying to repair it again right now. I’m an electrical engineer and I can do it myself. The affected keys are middle C#, D, D# and E
Are you certain it’s the soldering that’s bad? It looks to me like someone scored the heck out of the contacts for E. They appear wiped out in the photo.