Failing window cranks

Question

Moved into a place that had crank windows. Almost all of them didnt work. You'd turn the crank and nothing would happen. Others would open a little then start slipping.
What would cause this to happen?

Casey · Accepted Answer

Hello, thank you for writing in. It's possible that the gears on your operator have been stripped. If this is the case, a new operator would be in order. If you're able to upload some pictures of your operator I'd be happy to assist you in finding a substitute part. I would need to see the entire assembly from a bird's eye perspective, including the base, handle, arms, and clips/wheels at the end of the arms.