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Yamaha YC30 Schematic
MUFF WIGGLER Forum Index -> Music Tech DIY  
Author Yamaha YC30 Schematic
dankalmanson
Hi! I found a Yamaha YC-30 for free but it seems like someone took out the power supply. I was hoping someone here could have a schematic or some lead on how to find a PSU? Any help is appreciated.
ClausF
Just google Yamaha yc 30 service manual:
https://www.owner-manuals.com/YC30-service-manual-YAMAHA.html
Guinness ftw!
dankalmanson
Duhhhh. Thanks for putting up with me. thumbs up
dankalmanson
SO. I'm having trouble sourcing the power transformer. It says it needs a GAO164 but I cannot find anything about that online. Is there a code to finding output voltages because there are several?
devinw1
Looks like that transformer has multiple taps on the primary side, meaning it can be wired up to take either 240, 220, 125, 100, 117, or 110 V. That might be tricky to find, but I am no expert.

Or you can just buy a transformer that is of adequate size in VA that puts out 12V AC and I think you should be good and hard wire it for 120V US usage.
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