Uploaded April 2022 | Updated September 2026, 2 weeks ago

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I got my old Yamaha MU50 Tone Generator (keyboard/sound/midi module) out of storage with the hope of hooking it up to my Amiga via MIDI, however it doesn't work, so I'm going to attempt to fix that in this video.

Timestamps:
0:00 The MU50
0:50 The Problem
1:15 The Manuals & MU50 Description
2:24 Disassembly
3:38 The Power Stage
5:33 Measuring Power & Diodes
7:57 Disconnect Front Module
9:04 Replacing 5v Regulator
11:35 Retesting
13:09 Boot Test
14:22 Sound Test
16:35 Full Demo Song

Links:
Yamaha MU50 Manual - uk.yamaha.com/files/download/other_assets/1/318101/MU50E1.pdf
Yamaha MU50 Sound List - uk.yamaha.com/files/download/other_assets/2/318072/MU50E2.pdf
Review - soundonsound.com/reviews/yamaha-mu50-yamaha-cbx-k1
Service Manual - elektrotanya.com/yamaha_mu50_sm.pdf/download.html