Hi there, I have a rhythm board and its button assembly that was taken from an old Lowrey L50 organ. I can't find a schematic online but there is the service manual to another model in it's range, the L60, and from that I've determined that the board needs 15v. Is there any way to figure out where on the board I can hardwire a 15vDC power supply to it? My idea was to take the drum machine section of the organ and make it a standalone unit. I'm also quite confused by the fact that some of the wires have two wires inside, one bare standed wire and one regular insulated wire, and that some of these wires connect to two nodes but others only one. Here are some photos of the board https://imgur.com/gallery/C4P4Dps. Many of the wires that are cut were originally connected to other modules in the organ, but the button assembly and volume control are still connected- I'm assuming like a guitar I can wire the volume control to a 1/4inch output jack. I have basic electronic experience and tools (multimeter, soldering iron) and I think I may have jumped into this project without understanding what exactly I was getting into. I'd appreciate any guidance on this matter, thanks!