What happened to my G&P m120 motor?

[Novak]

At the last No limits game, my trigger contacts fried on me. So I replace them and go to test the circuit before I put it back in the gearbox.

But my motor won't turn. So after some fiddling around, I hook it up to the motor contacts of another gun(which runs fine), and It still won't turn.
I even tried turning the pinion gear by hand, and couldn't even accomplish that. I finally got it to turn using pliers, but it felt weird, It didn't feel like a motor usually feels. Instead of turning with that soft indexing feeling, it was like grinding, like something had got knocked loose inside of it and jammed everything up.

I don't really have any interest in fixing this motor, I just want to know if someone has had this happen to them, or if anyone has an idea of what happened.

[T6e9a]

I don't have all too much experience with motors, but to me, it seems like something, possibly a small screw or other small piece, got jammed inside the motor, preventing rotation. Some grips have a little disc that aids with the motor height adjustment, not sure if that could slip out of place INTO the motor, but it might be something.

Would the wires get warm or hot when you tested?

[ctres]

You may have something jammed in it or it may just be fried. I had a 140 at one point but never ran it on an 11.1 but I hear G&P motors don't like them much. Your comm could just have buildup from the brushes but that doesn't seem like it would explain the turning issue.

[Novak]

I did some more investigating and it was jammed after all.
But not by an external object. After I accidentally broke the plastic cap off, I could see down into the motor, and could see that one of the wires from the coils had broken and had jammed up between the motor wall and the outside of the rotor.