Ooooh, that's a tough question. Circuit boards (computer boards, in general) could be costly to replace. However, a computerized machine will most likely, at some point in its life, require board replacement. It just depends how much you like the machine and what you are willing to spend. This model series was discontinued some years ago and replaced with bigger/better?/costlier machines. Some people are less attracted to the 400 series because it has to be connected to a computer to do embroidery. Of course, there is always the possibility that when you replace one board, another may go bad. Such is life with most things computer. If a donor machine could be found with a good board, the cost may not be as much as trying to find a new board or going through Bernina. You can check what it would cost to have a Bernina dealer fix it for you. On the other hand, if you or someone you know is very computer-savvy, well, you know. Just remember, even if you replace it with another computerized machine, you could be facing the same decision in the future.
SOURCE: Bernina Aurora 430 utomatic button hole
Take it to your local bernina dealer and have them calibrate the buttonhole foot along with the speed control.
SOURCE: i want fix circuit board of my bernina 1030
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.
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