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Bernina 440 QE thread sensor shows thread is broken when it is not

The machine shows that the thread is broken when I am embroidering, but the thread is not. I have checked the bobbin, loose threads, anything that can affect the sensor. I need to know where the sensor for the top thread is to check if it has slipped, I do not know what else to do.

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  • 3,368 Answers

Try enterng this in the google search block; "bernina 440 qe maintenance" it comes up with a lot of informaton and even videos.

Posted on Nov 27, 2014

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Posted on Jan 02, 2017

  • 4 Answers

SOURCE: top thread wraps around bobbin

Is it birdnesting under the bottom or it is actually getting tangled inside the bobbin case? I've had my machine for almost a year and don't think I've had your exact issue. Sometimes, when you do a stich over a already stitched portion, you may have a problem with the bobbin and I just generally stop and start it again. It is important that you use the correct needle and also use a good embroidery thread and stablizer. Another thing suggested is changing the needle after about every 5 designs. Also, check the bobbin case to make sure there's no fuzzies caught in it. I use "canned air" like you use on computer keyboards. I also only use 40 weight emboidery thread for the top and actual bobbin thread for the bottom. Other threads can really jam everything up. So it's been trial and error to find the right combinations. Good Luck!

Posted on Jan 16, 2008

SOURCE: needle not picking up bobbin thread

Check the timing.

Posted on Mar 06, 2008

i_luv_2239
  • 12 Answers

SOURCE: The needle thread will not pick up the bobbin thread

It looks right but its not. Try looking on the internet for threading instructions. The bobbin winds in two directions, I have never saw a Bernina but I have 2 new machines and the thread goes in and then threads back to the left. Its hard to describe. But if the bobbin isn't right it will not pick up the thread. Write to Bernina for instructions. There are websites that have the directions for free.

Posted on Nov 19, 2008

  • 1 Answer

SOURCE: Husqvarna Viking #1plus bobbin problem

I have changed stabalizers and the type of bobbin thread i am using (invisible poly) and it seemd to have solved the problem. Note: wind invisible thread very slowly and carefully it is like fishing line

Posted on Dec 16, 2008

  • 136 Answers

SOURCE: will not pick up bobbin thread

Unusual for this machine. Check to be sure the needle is inserted with the flat side to the back of the machine. If it is, remove the needle plate, bobbin and bobbin case. Turn the hand wheel slowly toward you and see if the point of the hook is above or below the eye of the needle when the hook point is aligned behind the needle. If the eye is above the point of the hook the machine is out of time and best taken to qualified technician.

Posted on Jul 04, 2009

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Thread broken indicator


It may be that the upper thread sensor flag has come off the check spring at the bottom of the takeup arm cover - unfortunately this is not user-fixable and needs Bernina agent action. This happens frequently with people who, when finishing with a spool of thread, pull the thread backwards out of the machine - you should never do this. You can turn the sensor off by going into the menu that has an arrow with a box around it, but this is only a temporary fix and you should have the machine looked at.

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My bernina 440 qee embrodery module reports thread break and stops every 30 stitches alhough the thread is OK - can someone help?


The check spring might need to be adjusted. There's a flag and sensor mounted to the check spring that tells the computer when the thread has broken or run out. Might want to have a Bernina dealer check it out.

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