perhaps not all wires are needed for various alternate uses.
perhaps an electronics repair, or a computer repair place could sort this out. I agree, have them see if they can get the original going again.
original manual, with features will give clues to repair shop.
It spins, how does it change speeds, and does it have pitch control?
If you never use pitch control, you only figure out how to make it spin.
ps. you may need heat reduction when soldering to prevent damage
perhaps an electronics repair, or a computer repair place could sort this out. I agree, have them see if they can get the original going again.
original manual, with features will give clues to repair shop.
It spins, how does it change speeds, and does it have pitch control?
If you never use pitch control, you only figure out how to make it spin.
ps. you may need heat reduction when soldering to prevent damage