[Alan Anderson]

The Victor "brake" feature uses what's known as dynamic braking. It connects the motor leads together. The braking force increases as the motor speed increases, but when the motor is not moving there is no braking force. It will slow down and perhaps even stop a moving arm, but as soon as the arm comes to rest it will move again easily. It'll stop again, or at least move more slowly than without the brake jumper in place, but it won't stay stopped. Basically, you can't "freeze" a motor with dynamic braking.