Question about Sewing Machines
I realize that the problem is in the circuit board of the machine. The foot control doesn´t work because power don´t come on the motor enough and the foot control t's ok
I have found that the bernina machines in this general product range (i.e. with the slide-in processor boards) do tend to suffer from dry-joints, randomly throughout the boards. If you take the double-stack boards out after removing the handwheel-end cover, separate the two boards, carefully and dont loose the plastic spacers on the securing screws. Best thiong is just to go through the board carefully with a magnifying glass, re-soldering any joints that show signs of having 'frozen' when manufactured. Also, carefully clean the two connectors that provide interconnection between the control board and main processor board with a suitable contact cleaner. I also make a point of removing any surplus flux that may still be on the board from manufacture, using the above cleaner. Most symptoms tend to be when the machine randomly swaps between stitches. The rotary controls are special and not commercially available, so if they get 'scratchy', unsolder them first and give them a good spray with contact cleaner to remove any surface contamination on the potentiometer surface. Icant help with a circuit diagram. By the way, if the motor isn't running properly, the problem is on the power supply 'L'-print on the back of the machine - not the main control board. There is an adjuster on the PSU that is used to set the motor speed. Make a note of its position and just try rotating it back-and-forth a few times, again to clean the track, then return it to approx where it was - this might cure the problem. Again, I dont have a circuit diagram of the 'L'-print.
Posted on Feb 14, 2012
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Posted on Jan 02, 2017
4 amp??? More likely 1.6 slow blow. The problem solution is changing the power supply, called a Classic L-print. Typical on the 130/180 Bernina.
Posted on Sep 06, 2009
Bernina does not sell individual components for PCBs, rather they have an exchange program for the entire board. But you have nothing to lose and much money to save if you can obtain the parts and replace them yourself. You should be able to get the caps and resistors from any electronics supply.
Posted on Oct 01, 2009
Testimonial: "Terrific- that sorted that out as I could not easily find Bernina Service. I will go and buy the bits."
Refer to your manual for maintenance and clean the machine as indicated. A sensor may be blocked by lint.
If this continues, the machine will need to be serviced by an authorized Bernina repair tech.
Posted on Mar 25, 2010
The problem with you bernina is coming from the circuit board located on the back of the machine, there ar e a couple of fuses you might want to replace, if you change out the fuses and still no power the board will need to rebuilt aprox cost$150.00
Posted on May 03, 2010
SOURCE: I have a Bernina 180
Unfortunately no, I think that the 185 and beyond use the same emb module. The 180 if I remember correctly, has the memory and card reader in the module itself and may have a different plug. I do know for sure that the 180 hoops will definitely not fit on the newer modules. Sorry to disapoint, Allen
Posted on Feb 03, 2011
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