Picked up this old toy synth that was made in the 80s with the intention of teaching myself some stuff, but it came with no power cable. While I'm thinking of picking up an 8V adapter and Jerry-rigging the wires through the holes, I'd prefer to get something that doesn't require me to strip the wires, but if necessary I'll go ahead and snag an adapter and do that. Any help would be fantastic!
Yeah, actually looks like 9v goes to 9B+ and GND to 9B-, according to this. External speaker on pins 1 and 2 of вн.ус. Also looks like it steps it down to 5v inside using a resistor and zener diode of some sort (КС147А). If you had a benchtop power supply that you could really limit the current on to something tiny (10mA), then you could put 9v on the 9B pins and dial up the current until it starts working (but slowly and probably don't let it go over an amp or so in case 9B isn't the right place to put the supply on). Not really sure what the supply should be but it might need more than an amp, I suppose.