I don't have the Janome but I have the Husqvarna. I use the prewound bobbins with the bobbin thread mainly for embroidery. I have also used regular thread in the bobbin with no trouble. Glad your fix was easy enough. Some machines are just more temperamental than others. Glad your up and running!

Had the same problems. So I just use the same thread in my bobbin as I embroidery with.

Seems Janome only likes Janome bobbin thread I had same problem on my 300E...Hugs Sally

Thanks for making me think???

What were you using in the bobbin and what size was the thread, for the bobbin?

I have a Janome 10001 and it only likes Janome or brother bobbin thread. Anything else I've tried and the stitch-outs aren't worth the effort!

Yes I had this problem too, using Madeira bobbin thread with my Pfaff creative 4.0.
I tried cotton sewing thread which led to negative results (too much lint) and polyester sewing thread, which made the embroidery too stiff.
Now I use Anchor Cotton machine embroidery thread for the bobbin and this is the only one which workes fine for me so far.

This is so interesting Sue. I have found that my bobbin thread comes to the top when I am using inferior top thread - especially when doing fonts. I now use a some of the top thread on the bobbin and it works beautifully. A friend has also given me a couple of prewound bobbins to try.

I have not had this problem but I don't have a Janome. I have a Viking and it likes Sulky bobbin thread. I will keep this in mind though if I have this problem. *4U