I have a brand new Juki 2010Q. I have been playing with her a little, to get used to her. I wound one bobbin and inserted it no problem, threaded the machine, and ran it for a while. When the bobbin ran out, I tried to fill it again but managed to have the thread spool backwards and the thread caught in the notch in the spool. As I pressed the foot pedal it stopped and jammed.
I realized what happened, fixed the spool, rethreaded the bobbin winder but now it won't wind at all, nothing happens when I have the bobbin level pushed over and press the foot pedal. If I move the bobbin lever out of the way pressing the foot pedal makes the needle go up and down, its only the bobbin winding that doesn't work.