TRS MIDI Out Mod for the Yamaha PSS-A50

wozlaser February 28, 2025 Uncategorized 0

Can you believe they had pins on the board for this already?

This is an easy upgrade, and gives you TRS MIDI out on the Yamaha PSS-A50. Just find this blank header area on the main board. Pin 2 is your output, which goes to the tip. Pin 3 is 3V+, and goes to the ring. By pin I really mean pad. And when I say ‘goes to’ I really mean use a 220 ohm resistor to go to. Pin one is an input, but you need to add an optoisolator if you mess with that. Special thanks to sandsoftwaresound.net for translating and sharing this hot tip.