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Hello! My Bernina 1120 blows the F150 fuse immideatly when power on. First blown fuse was all black The others just slightly burnt. What could be wrong with the machine.
Thanks!
/Nisse
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If your Bernina Artista 180 sewing machine won't power on, here are a few things you can try:
Check the power supply: Make sure that your sewing machine is properly plugged into a working electrical outlet. Try plugging another device into the same outlet to ensure that it's working.
Check the cord and connections: Check the power cord for any visible damage or wear, and make sure it's securely plugged into the sewing machine. If you see any damage or wear, you may need to replace the power cord.
Check the fuse: There may be a fuse in the power cord or on the machine that has blown. Check the owner's manual for instructions on how to replace the fuse.
Try a different outlet: If you're using a surge protector, try plugging the sewing machine directly into a wall outlet to rule out any issues with the surge protector.
Consult a professional: If none of the above steps resolve the issue, there may be an internal problem with the machine that requires a professional technician to diagnose and fix.
If the issue persists, it may be best to contact Bernina customer support or take your sewing machine to a certified Bernina repair shop for further assistance.
Check EVERY segment of cord from the wall AC outlet to your machine.
Are there any power strips?
Are they turned ON?
Are any power strips overloaded with either too many things plugged into them, or a large power draining appliance?
I am certain you have already checked to make certain that
1) it is plugged in
2) There is not a fuse blown
While the surge protector is an excellent thing to use, BERNINA sewing machines also have a set of fuses in the power supply. There is a chance that one of these fuses has blown. My recommendation would be to take your machine into your local BERNINA dealer to get it checked out. As long as you have checked the cord, the surge protector, changed plugs on both, and checked the circuit breaker in the house, it is probably an internal issue that is best fixed by a certified BERNINA technician.
There are three fuses, all on the L Print circuit board under the rear cover.
F150 - main fuse on incoming mains supply
F151 and F152 - between the isolation transformer and the power supplies for the control logic, motors and lights.
If you are in the UK, then there's one in the mains plug too.
Likely the problem is a blown fuse in the S-Print (power supply).
You must have a grounding wrist strap when working with a Bernina Activa. They are extremely sensitive and can easily destroy the main circuit board if you don't use a wrist strap. You can get one at Radio Shack for less than $5.
The power supply is the square 1/3 of the machine on the back on the handwheel side.
You can remove the power supply by removing the long torx screw on the rear of the machine and tilting out enough to unplug the connector.
Then dismantle the power supply until you can get to the fuse. Test the fuse with a continuity tester. If the fuse is blown, buy an exact fuse. Don not deviate.
If the fuse is not blown, you may need a new power supply.
If this is an older model, the power supply module is a little sensitive to mains spikes - I've had three that have suffered a similar fate and all have required replacement power-supplies - the switching transistor gets blown and this is a job only for the qualified service engineer. My suggestion, I'm afraid, is to have it checked-over by a service engineer. There is a glass fuse on the circuit board, but if blown, it's usually for a reason and 9 times out of 10, just replacing it results in a second blown fuse !!!
Almost-certainly due to the main switching transistor having blown, however this is not necessarily an easy fix ... very often when this happens it takes a number of other components with it ... I had one last week where no less than 10 other components had got fried (and I do mean fried beyond recognition, due to somebody having put a bigger fuse in - doh! - dont ever do this ... it's dangerous!). Best thing to do if you dont really know what you're doing is to get a complete exchange 'L'-print.
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