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#YM1104

Rommudohrommudoh@social.tchncs.de
2025-05-31

I found this little #Yamaha #PortaSound PS-2 at a flea market for 5€. It even came with a nice carry case and the manual. The main chip is a #YM1104 C. Only thing I had to fix was the volume potentiometer, which was a bit scratchy and worked intermittently. A bit of cleaning and it works again. Maybe possible mods would be USB-C power input, or Li-Ion battery.
#synthesizer #fleamarket #repair

the Yamaha PortaSound PS-2 in its carry case, including the manual. it still is a bit dirty and has markings and stickers.closeup of the potentiometers, the red left one was the faulty one that needed cleaning.inside after opening it, giving a view on the back side of the PCBthe top side of the PCB, it had to be removed to get access to the potentiometers. the Main chip is a Yamaha YM1104 C.

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