I'm not sure about the normal cost to do this. I do have some experience working on these thought and usually just cleaning and lubrication will get them working again unless there is some damage.

I can take a look at yours and try to get it going again. I'll only charge you time and shipping. We'll try to keep it under $50.00
If interested reply to my email address and we can discuss further.
Brent
bturner@allwest.net