New Fader, fix VCO2:
workaround for defect divider IC (MM5823), to bring trigger for synth alive. Synth part is now working, Organ lost 7 tones. Looking for a MM5823.
Reapaired an contionous LFO pitch shifting on VCO.
Mellotron M400 S
First secret picture of my electromechanical intrument. It is waiting for a small repair session. 40 year old and in good condition.
Sounds are not original. It is a set of selfmade sounds for a soundtrack. Motor needs help for startup. CMC 10, motorcontroller, inspection.
Searching for schematic for CMC 10.
Is it an analog or a digital synthesizer? It is filled with hundert Logic IC.
NO Prozessor inside!
VCO1 is now running again.
SH101 and SH 1oh1 Midi extension. Works fine and a lot of fun with all new features. Fix Bender, clean not working keys and replace VCF fader . It was not so hard as I suspected. Even to drill two big holes for Midi in SH body works without problems. If you what to spend your SH101 this SH1oh1 from www.tubbutec.de ask me.
Sometimes I will be aksed to repair or modify
real analog devices like drum maschine or synthmodules etc.
Please feel free to ask me.
Korg KR 55