Bernina Virtuosa 150 - Answered Questions & Fixed issues

Question edited to add maker and correct spelling of Model Question moved to make model category. Contact their support direct. This is a very unusual machine!

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Never been serviced? Whoops, as an old tech, I'm not surprised, how often do you oil your machine and is it with quality Bernina oil or a light synthetic oil? Have you checked the bobbin case tension? As you are using two types of thread there will always be some imbalance of tensions best when you are turning corners to slow down your movement that will help a bit, but you may have to tighten bottom tension also another hint would be to use a Metallica or topstitching needle with a larger eye, allowing the upper thread to move more freely as the thread forms the stitches. if you need further help wayne Buss [email protected]

This might help you with bunching thread.
https://youtu.be/EYyYCul8j0k

try ebay

try increasing the needle thread tension

Basic Tips for All

1. Always turn the handwheel TOWARDS you (counter clockwise) as turning it in the opposite direction (away from you, clockwise) may knock the timing out requiring repair from a service center.
2. Always be sure your presser foot is in the DOWN position before sewing. Sewing with the presser foot in the up position will cause your thread to tangle and your bobbin to jam.
3. Change needles regularly (after 16 hours of use) as dull/weak needles can cause damage to your machine and fabric. Only use SINGER needles on your SINGER sewing machine.
4. Always be sure you are using the correct bobbin for your machine. Class 66, Class 15 and Class 15J bobbins look very similar. However, using the incorrect bobbin class in your machine can cause damage.

How do I thread my 3/4 thread serger? (14SH654, 14ET754, 14SH764, 14CG754) Q. How do I thread my 2/3/4/5 thread serger? (14T967, 14T968, 14T957) Why is my electronic machine beeping? Why won't my machine sew? Why will my machine start to sew then stop? Q. How do I sew denim and heavy fabrics? Q. Why is my bobbin not winding evenly? Q. Why won't my machine pick up the bobbin thread? Q. Why is my machine skipping stitches? Q. Why is the thread looping/bunching under my fabric? Q. Why is the thread looping/bunching on top of my fabric? Q. Why doesn't my stitch pattern match what is on my machine? Q. How often should I oil my machine? Q. What types of thread should I use? Q. I can't see the take-up lever?..,/

You might try downloading this manual (not your model but may be close enough). BERNINA Support Machine and Accessories Finders and Software Support... Or try these: http://www.google.com/url?sa=t&rct=j&q=&esrc=s&source=web&cd=5&ved=0CDYQFjAEahUKEwjX0KOF98fFAhXLbK0KHbUdAGM&url=http%3A%2F%2Fwww.itsastitchonline.com%2Fmastery_on_the_web%2Fmastery_1200da_1300dc_6-1-02.pdf&ei=xBdYVdfeGcvZtQW1u4CYBg&usg=AFQjCNHpX-exx9Zep70_Xf6TwEpTcZ3SDw&bvm=bv.93564037,d.b2w&cad=rjahttp://www.youtube.com/watch?v=QEwBj2ZdOiI

try these links and see if it's what you need, if the link doesn't workgo to the bernina website and where the search is type in extensiontable and it will bring them uphttp://www.bernina.com/en-US/Products-us/BERNINA-products-us/BERNINA-Accessories-us/Special-sewing-accessories-us/Slide-on-free-arm-table-ushttp://www.bernina.com/en-US/Products-us/BERNINA-products-us/BERNINA-Accessories-us/Special-sewing-accessories-us/Free-arm-slide-on-table-for-more-sewing-space-us

There is a dial on the left side near the light that can be rotated to put more pressure or less pressure on the foot. If that is not working the spring inside may have become detached

On the side of the bobbin case is a half moon shaped curved spring with a screw through it securing it to the bobbin case take the small yellow or red screwdriver that came with your machine and turn the screw clock wise to tighten and counter clockwise to loosen. Correct tension is achieved by inserting a full bobbin of thread, into bobbin case, remove the half moon shaped shuttle from machine, put the bobbin case on to the shuttle, now hold just thread and with a youo motion shake the above and the shuttle and bobbin case should slide down the thread about 12 to 24 inches for correct tension

here is a link for parts for the sewing machinehttp://www.sewingpartsonline.com/bernina-150-sewing-machine-parts.aspx

NEwer machines do not have a light switch, the light bulb on your machine may need replacement. Cheers, Kelly Embroidery Services San Diego, CA

The foot control is a simple device with a resistance value that, as the foot control is depressed, the value diminishes and the machine runs faster. The cause of an immediate run condition will be the result of the following: 1. The cable or plug has been damaged so as to connect both wires to create a maximum run state. 2. Most common to the foot control itself is that the actuator for the slide resistor is broken and stuck in the max run spot as well as having been disconnected from the on/off micro switch. 3. The foot control has been taken apart and improperly assembled. SewTechnical Home

Make sure you are turning the flywheel the correct direction.

Did you mention this specifically to the repairer? Could be a number of things ..... needle, timing, needle clearance to the hook, burred hook...... all of which should have ben checked when it was serviced. Was there a sample (sewn out by the repairer) with the machine when you picked it up? ie to 'prove' it was working correctly.

I know a lady who had a machine and never took it out of the box until one day she did and itching would work- The machine had frozen up and she had to send her machine back to the shop to be repaired- it is always good to take a machine out and run it even without thread to get the oil moving around in it- probably once a year is fine but don't wait for several years.

try increasing the presser with the adjuster

here is a link for a manual Bernina 150 160 Virtuosa Instruction Manual

Lila go and take a few lessons on how to properly use your Bernina. So much to get right to have successful operation.

Try adjusting your tension to a lower number. Don't make large adjustments all at once. Also, using some spray air, clean out debris and threads from under the bobbin. Good luck!