Yamaha PSR-550 Volume Control Board (VR Board)

12V2A Power Supply/AC Adapter for Yamaha Portatone Keyboard: PSR-540 PSR-550

Yamaha PSR-550 ENC Encoder Board

Yamaha PSR-550 Encoder Knob

YAMAHA PSR-75 Vintage Keyboard Used Part: ON/OFF Switch & Button Pad PCB Board

YAMAHA PSR-172 Keyboard Used Genuine Part: AC Adapter Power Phones Circuit Board

YAMAHA PSR-240 Music Keyboard Part: ON OFF Switch PCB Board & Red Cap [XR658]

Yamaha Tyros Power Inlet Board