I doubt that there is a solution for you.
In the base of the camera there is a dual layer circuit board the diameter of the base. At first I thought the trouble might be a couple power transistors that are mounted right near the connector for the motor, One is a PNP and one is an NPN, but they are both OK. I looked over the board with a five power magnifying glass and spotted a pair of BCP69 medium power transistors that are physically damaged. No question they are bad. There is another pair close to the first pair. The second pair look good so far as appearance. I have replacement transistors on order, but that doesn't mean they will solve the problem. Time will tell and I will let you know. I'm a newcomer but I'm 83. Wayne