My Singer did that one day. I could not figure out why to save my life, then I just thought maybe my bobbin was too full. It wasn't any fuller than any other day, but I took some thread off and tried it again and it worked perfectly and has since. (KNOCK ON WOOD) I hate that about your Brother, it isn't even a year old yet. If they made things like they used to back when, we wouldn't have these problems.