This odd little thing, made by Gibson/Maestro in 1967, is not a synth but an early effects processor designed to be used with a mic’ed signal from a woodwind instrument. It is basically made up of circuits more commonly found in an organ: frequency dividers to drop the signal down by an octave (8′) or two octaves (16′), fixed low pass, high pass, and band pass filters, and a fuzz circuit. You can plug anything into it and it will make it sound trashy and huge. It’s pretty cool.
The W-2 didn’t look like it had ever been worked on before, but it was actually missing a resistor that from the way the board looked seemed like it had never been there, meaning two of the voices never would have worked. It took a long time to figure that out without a schematic to refer to. We always check that everything is OK with the components that are there, but who thinks to check for components that are missing?
Work done: replaced all of the electrolytic capacitors, cleaned all the switches and pots, (customizable 15-contact spring switches as used in combo organs) and replaced three transistors to fix two octave dividers. Finally, added in that missing resistor once Darian deduced what was going on.