I read this on facebook. I'm assuming it's about the new 830. For all Bernina 830 owners - if you are having problems with the bobbin sensor telling you that you are out of thread when you have a bobbin full of it, there is a batch of "bad" bobbins out in the market place. If the silver is coming off a bobbin, you can take it to your dealer for a replacement under warranty.

Thank you, that is good to know about the bobbins.