Mine had been doing that a couple of years ago. I have a Janome 6500. I took the foot pedal in to get checked. They took it apart and cleaned it. About a year ago it was doing it again. And occasionally it would act up and show the icon on the screen of the plug in part that goes into the machine. I took the foot pedal back, he looked at it and sold me a new one for $80. But now it is doing it again. Is this just related to Janome's or does it happen with other machines too?