If your Bernina sewing machine only runs at full speed and you have the Type 289 (or 287) foot controller then this video may help you repair it yourself.
If you have this problem with your machine, you may notice there is no slower speeds and no acceleration ramp up. When you put your foot flat on the controller the machine takes off at full speed.
Generally this is just a failed or failing capacitor which is fairly easily replaced with a readily available capacitor.
I also show what the adjuster screw on the bottom of the controller does.
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Index:
0:00 - Introduction and explaining the fault
2:38 - Removing the foot pedal from the controller
6:46 - Partially removing the circuit board
10:42 - Identifying the faulty capacitor and replacing it
13:30 - Assembling the foot controller
22:22 - Testing
23:45 - Explaining the screw adjuster under the foot controller
25:02 - Conclusion and thanks
Web Site - www.institches.co.nz
5 авг 2024
