I have an identical problem to this thread. The power comes on, all the drives spool, the bluetooth light turns on... no monitor output. After picking through the advice listed here, I found ArmenianTech's solution to be the most logical and set about testing his theory. He's absolutely right. The cooling fans broke thier silence almost immediately after the video card was removed, ruling out a motherboard issue. It's a cooling problem with the video card, and an engineering issue in the laptop build. I have not replaced the video card, and I'd like to know if it's fried... how can I test it?
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For the Bernina 720, this message indicates that the upper thread has broken or isn't coming off the spool properly. It can also show up when the spool is empty. Make sure that the presser foot is raised to the highest position. Make sure that the needle is up, as well. Cut your top thread near the spool. Pull the remaining thread out of the machine. Look and remove for any loops of thread from the thread path. (I've seen the thread tie itself around the take-up lever when the top thread frays.) Completely re-thread the top thread. Before you start, make sure that the thread can't catch on the spool where the thread can be stabilized to avoid the spool unrolling when not in use.
Likely uneven feed (top thread snagging on spool). This machine has a horizontal spool so be sure the the spool cap is larger than the spool and double check with the manual on which way the thread is supposed to come off the spool... I believe it should fall forward, so if not then flip the spool.
Could also be top tension is extremely high.
Or possibly the bobbin thread has no tension... be sure to hold the bobbin spool with right index finger while you guide bobbin thread into slit. You should feel the bobbin thread slide underneath the bobbin case tension spring. See machine instructions.
Check how your thread is coming off of your spool of thread. If it is older thread it is wound on the spool differently than a modern spool of thread. The older types of spool were would to pull off of the spool from the side. The newer thread is wound so that the tread needs to come off the spool from the top.
1. Turn the power on the machine.
2. Open the bobbin winder cover at the top on the right side of the sewing machine.
3. Swing up the bobbin thread spool pin. Move the bobbin thread spool pin up as far as possible.
1-Bobbin thread spool pin
4. Place the bobbin on the bobbin winder shaft so that the spring on the shaft fits into the notch in the bobbin.
2-Bobbin winder shaft spring
5. Slide the bobbin winder shaft to the right.
NOTE: If the correct size bobbin is not used at this time; when the bobbin winder is engaged; the bobbin winder will make a usual noise and not wind the bobbin correctly.
6. Place the spool of thread for the bobbin onto the bobbin thread spool pin.
7. Slide the spool cap onto the bobbin thread spool pin. NOTE: If using thread that winds off quickly, such as nylon or metallic thread, place the spool net over the spool before placing the spool of thread onto the spool pin.
8. Pull out some thread, and then thread the thread guide for the bobbin winding. Hold the thread with both hands, and then securely pass the thread as far as possible into the two slits in the thread guide.
1-Thread guide for bobbin winding
9. While using your left hand to hold the end of the thread that wraps around the thread guide for bobbin winding, use your right hand to wind the free end of the thread clockwise around the bobbin five or six times.
10. Pull the thread to the right and pass it through the slit in the bobbin winder seat.
Usually thread too loose on the bottom is caused by the upper tension being too loose. The top and bottom tensions work together with the top thread making the underside of the stitch seem too taunt or too loose and the bobbin thread causing the top side of the stitch to be loopy or too tight. Select a large zig zag stick and sew a couple of inches. Then examine the stitch. It should look identical on both sides. Look to see which side is drawn too tight, the zig zag being smaller on that side with threads from the bottom threads pulled through. Then adjust the two tensions so that they make a uniform, identical stitch.
Also, when the bobbin tension is right you can hold the bobbin dangling by the thread and it won't spool out to the floor but will let loose a bit with a slight flick of the wrist. Too loose it will just spool out. Too tight and it won't drop at all. When you get that set right then do the above zig zag test to see where the top tension should be set.
Check to see if the thread coming off the spool is tangling on the spool pin or getting caught in the crack on the spool top where the thread originally comes off spool. Make sure the spool pin is pushed all the way to the right to secure your thread and then back it off slightly so the thread pulls evenly off the spool. Whenever your bobbin thread gets bunched it is usually something is wrong with the threading of the UPPER thread and vice versa. Let me know if this solves your problem.
Check the spool to make sure there isn't a nick in the cap where the thread can catch. If there is it can be smoothed with an emery board, or just turn the spool so the the thread feeds from the opposite end of the spool.
If the thread is unwinding too fast and pooling around the spool pin, you can use a thread net to help stop this.
Thread nets come in a long tube and you cut them to size. They can be found with machine embroidery supplies or at a dealer.
You would be best to download an instruction manual for your machine as it explains clearly, with diagrams how to thread and insert the bobbin. You probably wont find the 530 manual however download a copy for Bernina 530-2 or 532-2 as they are almost identical to the 530.
There are a couple things that come to mind. If your plate is not pushed all the way up where it engages the metal tab on the bobbin, it will not wind properly. Second, if you are using a generic or an old bobbin, you need to replace it. I have seen many machines drive the owners crazy and it turned out to be a bad bobbin.
Cut a round curcle of fabric the size of the spool from a piece of felt. Put a hole in the middle and put it under the spool of thread. If this does not work you can purchase a small net that fits over the spool. It is designed to keep the thread from coming off the spool except for being pulled through naturally.
Hope this works.