Machine stops and says thread is broke. Mean while the thread is not broke

Try reducing thread tension.

Try a different bobbin

If no change, see "Cleaning the Hook Area" in your operators manual.

Inspect bobbin, bobbin holder and hook race for burrs. Especially if a needle broke just prior to the start of the problem.


Thread quality?... As a test, try using a different (new) thread, wind a bobbin with same new thread also.

I`m confused whether you mean top bobbin or lower bobbin...You can go back to the point where it broke...Brother machines are far more simple when this happens...

Do you mean the holder that goes in top in order to put on another reel of thread to use twin needle? Or do you mean the little gizmo that stops the thread from coming off the spindle while sewing. Can you supply more info? :-)

Most machines have a stitch counter, stitch forward and step back features. Check your manual and embroidery machine's screens for this.

IN case you have misplaced your manual I found this one for you. It's big so allow time to download.
http://www.itsastitchonline.com/mastery_on_the_web/Mastery_170_180_1-10-02.pdf

http://www.husqvarnaviking.com/ko/6953_2494.htm
Not sure if you have looked here but I posted it anyway... Hope it helps.

I have an Artisa 180. WHen the threads break I stop it and backup the stitches to where it broke. Read up on your machine and see if it can do this. Look for the icon on the embroidery machine that looks like an S with a tail! It allows you to move forward or backward in the design and find your place where the thread broke. It can salvage a design so you don't have to start over.

Have installed your bobbin right? By this, I mean drop the bobbin in but make sure that you pull the thread through the tension spring by putting your finger to hold the bobbin in place, then pull on the thread to get the tension. Let me know if this works.

Try changing the needle again. I have had some cause me trouble even if new. And make sure the bobbin is in the right way.

I have a Janome 9000, was sewing and broke needle, replaced and broke another. I didn't have machine threaded, took out bobbin and would sew a little and stop saying thread broke. I took off top plate and started machine again, sew a little and stop saying thread broke. So I took out bobbin case and sewed again and stopped repeating the message. Everything looks OK, bobbin case and top plate. I guess I want to know if the timing could be off or do you think it is the computer part of the machine...Should I take it to the Sewing Machine Shop??

You need to see if the take up spring is moving freely when you are in these first 15 minutes (I assume the machine runs ok after 15 mins).
The take up spring is on the left side of the tension assy. When the thread is pulled up toward the take up lever, you should be able to look through the slot in the front of the machine and see a copper colored wire move up and down as the thread is pulled and released. This is the end of the take up spring. The spring is attached to the thread breakage sensor. If its movement is sluggish, it may cause the machine to falsely indicate the thread broke.
Sewing very slowly may cause this problem to stop. If the machine runs as minimal speed and then gives thread break indication when speeding up, the sensor interrupter is not moving fast enough and should be cleaned and lubed.