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Control Box Wiring Diagram for Bernina 830

I have replaced the motor for my Bernina 830 and it's running fine, but I have found a couple of wires loose and not sure if they are meant to go anywhere. I can only assume that perhaps they regulate the speed of the foot pedal? Is there any way I can get a wiring diagram for the control box?

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Posted on Jan 02, 2017

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SOURCE: bernina 830, worked fine until today... think it

there is a board inside the foot pedal that goes out sometimes you can check this by flipping the foot pedal upside down and at the top right there is a small hole where you can adjust the speed with a flat head screwdriver but be gentle it breaks easy, if its out you can take it to a bernina dealer and they might have a reapired one or they can send yours off for repair since that part is repair only

Posted on Jun 26, 2009

  • 1116 Answers

SOURCE: Are Bernina Nova 900 foot pedals still available?

Have you contacted these people?

They may be able to find one or offer another that an electric shop can fabricate to work with this model sewing machine.

Posted on Mar 12, 2010

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SOURCE: I need a Bernina 830 foot pedal. The machine is

You can fit any foot control providing you only have two leads coming from the control, you should be able to get a replacement Bernina control on

Posted on Mar 24, 2010

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SOURCE: I have and old Bernina 830 and am trying to adapt

unless the new harness and control is for a new style computerized machine the control should be the same, the different size plug is baffling me

Posted on Jun 26, 2010

SOURCE: I have a Bernina 830, bought in 1978. When I

you might see if you can have that one fixed

Posted on Jul 30, 2010

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Concerning 1970s 830 Bernina. There is no motor sound..nothing. Are the carbon brushes in the pedal?

The 830 models varied so I'm not sure. My machine looks like this:

Bernina 830 sewing machine feet pedal accessory box table instruction...

If you scroll over to the photo of the motor, there is a white plug which pulls out. Underneath, there is a screw. The carbon brush may be there. However, some 830s had the speed switch on the machine (right above the knee control) and others have it in the foot pedal.

I found the following information in my computer files that may be helpful: Bernina 830 Motor Brush Replacement

My machine is actually a Bernina 830 (mechanical 34 years old) I need to know how to get the housing off the motor so my hubby can replace the brushes

Re: sewng machine motor housing


Remove the big plastic cover piece on the bottom of the machine with the single screw in the center.

Remove the machine's end panel by removing the single silver screw from underneath the bottom middle of the side panel. Pull the bottom of the side panel out and down to remove it. It comes off easily.

Remove the two screws under the motor assembly (silver screws with black washers).

Swivel the motor assembly enough to remove the belt.
There is a another plastic panel on the motor assembly over the motor itself. Remove the two phillips head screws to remove this panel.

At this point you can see the commutator and inspect the "business" ends of the brushes. (In our case, one brush was almost gone and there was nothing left of the second brush except the spring!)

You can then slide the motor out of the housing. I pushed on the motor pulley and pulled on the other end of the motor with pliers. The motor comes out rather easily, but be careful not to disturb the wires any more than necessary.

With the motor exposed, unscrew the caps over the brushes and remove the brushes.

Our motor's commutator looks significantly worn and the motor may need to be replaced.

FWIW, if your machine hasn't been oiled for a long time, you should probably take time to do that. When the old oil solidifies, it sticks the moving parts together. Forcing the motor to try to run the machine can damage the machine. Use fresh good quality sewing machine oil or (I use) liquid Tri-Flow Synthetic Lube and apply a couple drops every place metal rubs on metal. (Wiggle the handwheel and watch where things move.) Do NOT oil belts, synthetic gears, cams.


Oct 22, 2016 | Bernina Sewing Machines

1 Answer

Bernina machine starts sewing anfmten stops or doesn't start at all.

Be sure that you regularly clean and oil your Bernina. If not oiled regularly, the old oil turns to varnish and actually freezes the parts. Some people believe something is wrong with the motor or foot control, when really it just needs some TLC to keep it running smoothly.

May be one of several issues--depends on the model Bernina. Could be a problem with the foot control. I had to replace a carbon brush in the foot control of my 930. (A new foot control could cost over $160!)

Repair Bernina Type 290 Foot Control Pedal
Sewing Foot Control Replacement

Or some machines (mostly older models, ie 830 Records) have carbon brushes on the motor that wear with age. Once they've worn down, they no longer make constant contact giving you the "intermittent" issue. I've replaced carbon brushes on some older Berninas--usually found somewhere around the motor (look for a screw or knob on the motor). You can buy replacements a lot of places. I've purchased them on eBay.

Sewng machine motor housing

How to fix replace Bernina Record 830 sewing machine motor capacitor...

Where are the carbon brushes located on Bernina sewing machine located It...

Carbon Brush Bernina 324250080 (make sure it will fit your model);wap2


Oct 01, 2016 | Bernina Sewing Machines

1 Answer

I need a wire diagram for my bernina 830, please help I am out of commission until 8 get this back together! ! I have the original machine manual but that doesn't go into the wiring of course! I had to...

You will have to deal with this site being in German but it's not difficult to get to grips with. The site is a bit randomly disorganised (much better than it used to be). You'll find lots of other information scattered about the site.

Try the following links:
S21 Elektrik 1 Herzogenbuchsee Info BERNINA Service Tipps Lenco Switzerland

S22 Motor Service Herzogenbuchsee Info BERNINA Service Tipps Lenco...

and here:

830 Record Serie Herzogenbuchsee Info BERNINA Service Tipps Lenco...

I hope this all helps.

Mar 17, 2015 | Brother Sewing Machines

1 Answer

I have a bernina record 830 and i want instructions to install motor on it

You ought to look at the link below. The site is in German but contains loads of information on the linked page and also elsewhere. German isn't insurmountable as a problem these days with all those translation facilities.
830 Record Serie Herzogenbuchsee Info BERNINA Service Tipps Lenco...

Feb 03, 2015 | Bernina Sewing Machines

1 Answer

What to do when foot pedal just stopped working on old Bernina 830

There are a few problems possible. Assuming that there is not a mains (house) power problem, use the following logic to sort out the problem:
1. Do you have a light (assuming that the light bulb is good)? continue to #2.
2. With the machine unthreaded, the presser foot up, and the power cable plugs fully plugged in at the motor and foot control, depress the control to the run position.
Carefully bend and wiggle the cables at the plug locations one at a time. If the motor runs, the cable wires are damaged so you will replace the cable.
3. If available, try a (known good foot control) from another Bernina 830 of that exact vintage.
If the test foot control runs the machine, replace your foot control. Note: If the foot control is a type 213 for very old models, suggest that the control be replaced with a two wire electronic phase type control. (requires the foot control plug end to be cut off and rewired to the new phase controller). These electronic phase controls can be purchased from EBAY. Stay away from the Bernina type 213 control if possible. The type 213 controls have not been available for many years and it is highly likely that these controls are in a used condition, so you will not know if it has been properly adjusted.
If the 830 is a later model machine with the type 232 or 290 foot control and it is determined to be defective, no problem as they can be repaired.
4. If the (known good foot control) still does not work, you can assume that the motor has a problem. Motors for the Bernina 830 are occasionally available on EBAY and other sources.
Note: If the motor brushes have worn out and the commutator has been damaged, the motor is also salvageable.
Note: Always unplug the machine from the mains power when not in use as per Bernina instructions.

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Jun 05, 2014 | Bernina Sewing Machines

2 Answers

Bernina 830 old style need replacment part -under extention table

The clamping yokes for Bernina sewing tables for models 830 and earlier models were hand fitted parts. Welding this may change the geometry so that the table may not fit at all. Additionally the material is diecast AL, not cast iron, and may or may not accept TIG welding applications.

Aug 27, 2009 | Bernina Sewing Machines

1 Answer

I have a bernina 830, I replaced the motor but forget how the wiring goes, please help.

the 830 has 3 'banks' of terminals to connect to. with the motor in the cover and laying over on its side so you can see the motor and wiring, one motor wire goes to the teminal closest to the machine pulley and the other motor wire goes to the middle terminal.


Jul 23, 2009 | Sewing Machines

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