Pedal Assembly V2 for Yamaha E-Pianos XR780

The differrenz is to see in Pedal PCB. This PCB is without ground cable.

Practice tip:
Yamaha has built in a socket on the boards, which are built into the pedal which is perpendicular to the board. Here, the cable is plugged in that leads to the electronics of the electric piano in the upper part. As a result, this beech breaks out in the course of the operating years and it comes to the failure of the pedal.

In most Repartur cases, it will be enough just to swap the socket.