How to Repair a Bernina Speed Regulator Foot Pedal - small electric toothbrush

When your Bena speed regulator pedal starts to run fast or slowly, it may just need to be cleaned.
On the other hand, the problem may be a capacitor or PCB (
Printed circuit board).
If you think you need to replace your Bena speed regulator foot pedal, consider fixing it yourself before taking it to the store.
You can save a lot of money by mastering a little basic electronic knowledge.
Unplug your Bernina sewing machine
Use a flat head screwdriver to pry the base off the foot pedal at the pivot point.
Pay attention to internal mechanisms.
Before proceeding further, make sure you know where the springs and other components are and how they are installed.
Use a lint brush or a small toothbrush to gently clean any dust and dirt that may gather within the shell of the Berna speed regulator foot pedal.
Put the springs and other parts inside the pedal back in their original position.
Hold the pivot end of the Bena speed regulator pedal with one hand and break the base in place.
Plug in your Bena sewing machine and test the foot pedal to see if the problem has been resolved.
Plug in your Bena sewing machine and test the foot pedal to see if the problem has been resolved.
Watch the wires carefully to see if they break or break.
Remove the PCB carefully.
Heat the soldering iron and scrape away any dirt or residue that may have been left in previous work.
About 1-
Remove quarterly inches of insulation from each wire and carefully pat a little bit of solder compound at the exposed end of each wire.
Connect the wire to the PCB using a soldering iron.
The wires that are allowed to be welded are completely dry until they are cooled and difficult to reach.
Replace the Spring and other internal components.
Carefully put the PCB back in place to ensure that the new welding material is not damaged during processing.
According to the description of the first step above, re-combine the pedal of the Bena speed adjustment.
Follow the instructions in step 1 above to remove the base of the Bena speed regulator pedal.
Remove the capacitor and check.
The capacitor looks a bit like a battery.
Remove the capacitor if it is worn out.
Purchase New capacitors that meet the exact specifications of the old capacitors.
It is best to bring the old one to a reputable dealer who can meet your specific needs.
Replace the worn capacitor and re-follow the instructions in step 1 above
Assemble your Bena speed adjustment pedal.