I posted this a while back. I had a Pfaff passport 2.0 That would just stop stitching although the lights remained on. I would turn it off, unplug it, turn it back on and it would work just fine. Kept doing that. Then it would not run, then I was just sitting there, hands off the machine and it took off at full speed and would not turn off until I pulled the plug out. Brought it in a couple of times. It always worked in the shop. The tech said he thought that the computer boards inside were very sensitive to static, tiny dust particles, etc. He did run it for a while he said but could not make it misbehave. He had already cleaned it at that point. I was so tired of dealing with this machine, I actually haven't even run it since I got it back and it has been over a year. I would like to get rid of it but because of the problem I don't want to sell it to anyone, and I also have a problem with just tossing it out in the recycling as it sometimes works. Thoughts?