Hi Lance, welcome to VK
Your set is covered in the Riders series of service manuals in volume 6. I have a copy and I'll take some digital photos you you in a bit.
Please don't try plugging the set in until it's checked over electrically. There's a chance a parts has gone bad and could damage others. Also, you never know if someone had been working on the set and left wires and parts hanging or shorted.
Good luck,
Bob