The Korg M50 is a music workstation synthesizer that was released in 2007. It's a popular instrument among musicians and producers, known for its high-quality sounds, intuitive interface, and advanced features. If you're looking for a service manual for the Korg M50, here's some information that might be helpful:

: Some advanced users perform a "Power Supply Mod" to install an internal PSU similar to the Korg M3. korg m50-61 service manual - Elektrotanya

: A PDF guide for the M50 service manual is available, containing troubleshooting guidelines and technical documentation.