Janome 8080 computerized sewing machine

The bobbin problem is intermitent, but when it malfunctions the bobbin jumps around in the holder and jams. Have tried changing the bobbin as well as the thread, and checked to make sure it was threaded correctly. I've also cleaned any lint out of the race. However being only two years old and not used regularly, I found very little. I've been very dissatisfied with this product because it's not dependable. The bobbin problem is intermitent, but when it malfunctions the bobbin jumps around in the holder and jams. Have tried changing the bobbin as well as the thread, and checked to make sure it was threaded correctly. I've also cleaned any lint out of the race. However being only two years old and not used regularly, I found very little. I've been very dissatisfied with this product because it's not dependable.

Same problem here, happens once in a while. Still can't fix it. I know the top thread is getting caught on the sharp point of the hook race and that causes the problem. But how to fix? Sometimes it just corrects itself when I shut off machine and turn back on. This time nothing works: not cleaning, taking apart, turning off, changine needle. Help.... Same problem here, happens once in a while. Still can't fix it. I know the top thread is getting caught on the sharp point of the hook race and that causes the problem. But how to fix? Sometimes it just corrects itself when I shut off machine and turn back on. This time nothing works: not cleaning, taking apart, turning off, changine needle. Help....