Poltergeist?
Hello Quilters, Has anyone ever had a machine sew by itself? My computerized machine (I don't know if it's against the QB rules to name the brand) occasionally sews by itself after hours of use. With no pressure on the foot pedal, the presser foot and needle just start going up and down until I shut the machine off. If it was turning out quilts I wouldn't complain, but it just knots up thread under the throat plate. The machine is just over a year old and the problem started a few months ago. It doesn't happen every time and, of course, didn't happen in the repair shop so they couldn't diagnose or repair the machine.