Hi, thank you for contacting JustAnswer.com. My name is Russell. I will do my best to provide the right answer to your question.
The case you are asking about is a difficult one... precisely because there is likely to be no manual whatsoever (that would help with repair) available anywhere.
In fact I cannot even (at this point) determine what exact model you have. It doesn't seem to be sold on eBay, for instance... the nearest I seem to have found, is this (just the skull in the crystal ball):
If that is a match to the skull-in-the-crystal-ball in your Gemmy figure, please let me know.
I am guessing that your model is one of the kind that is large or near-life-size.
Perhaps this is the model you have:
If so, then the problem yours is having, could be one of several things.
1. the wiring may have been delicate, and some wire joints may have been bent and broken by being bent.
2. even more likely, or at any rate quite as possible, is that the motor(s) that drive the motions may have failed, and be in need of replacing.
3. perhaps, just perhaps, dust has gotten into linkages and/or gear trains, and 'frozen up' the action of the motors that no longer move the parts.
To address these three possible causes, you will need to have someone with a delicate touch and some experience with electric devices, disassemble the figure skillfully enough to not break its outer case etc., and examine the workings for those three problems.
(Additionally, though (1) above may apply to the witches' eye not lighting up, it could simply be that a bulb has burned out. That is, if the 'bulb' is not actually an LED light... and they seldom burn out.)