Originally Posted by
mermaid
Sounds to me like it might be the sensor. You know it works via a tiny laser light shining across the bobbin to determine the thread fill. But I'd try vacuuming that area and do another cleaning before rushing off to the repair shop. seems it tho't the top thread was broken! Guess I didn't have it threaded well. Anyway--good luck!
Thank you so much for the info. I had no idea how the bobbin sensor worked and I would assume the upper thread must work the same way. I use a very soft paint brush to remove the lint but haven't vacuumed so I'll give that a try. I did have a problem with the bobbin sensor being off a long time ago, but that quit on it's own. It's the top thread that's driving me nuts now, and my machine only turns both off or on, not individually. I will vacuum and give it another try. Thanks again!