Question about Bernina Virtuosa 150

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Bernine 153 QE motor sometimes does not respond to foot pedal

When beginning to sew, it seems like there is a "dead spot" in the foot power pedal. If I release pressure and start over eventually it catches and it sews. This is not a continual problem, but about 50% of the time it happens. I have not tried switching power pedals with a friend, but if I did and the machine responds the same, what could be he problem?

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  • 202 Answers

If its not the footcontrol (which it probably is) it is most likely the circuitboard acting up. Needs a tech.

Posted on Feb 28, 2009

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2 Answers

What would cause my Kenmore sewing machine's light to turn on but the motor seem to have no power?


The wiring for the older Kenmore is simple. The light switch completes the connection to the light. If the foot pedal has failed or connection loose where the wire attaches from the foot-pedal the motor will not run.

Also if the brushes in the motor are worn or failing to contact the motor internally the motor will not run.

With light on and pedal partially depressed attempt to activate motor to determine if brush connection are faulty. If the motor reacts at all the brushes will likely need to be replaced.

No success borrow a foot pedal from a friend or sewing center to determine if the pedal control is faulty.

Hope this helps?
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Oct 15, 2016 | Kenmore Sewing Machines

1 Answer

My Bernina 801 sport will not sew. When I step on the foot pedal, nothing happens. Sometimes it will sew for a few seconds and then stop. I cleaned it out but still will not sew


There can be a few problems that match your inquiry. Pleas check the machine in the following logical order:
  1. The power cable can be defective....With the machine plugged in and un-threaded, step on the foot control to check for a motor run condition and at the same time wiggle the cables at the motor plug connection. If the machine runs/stops/runs and stops, it is likely that the cables and or plug are damaged. Replace the cable. If the cable is found to be good, go to step 2.
  2. Check the motor run condition by changing foot controls. If the machine runs without a run/stop problem, the original foot control will have to be rebuilt. If the foot control is found to be good, go to step 3. Step 3 is for a qualified technician level of competency only.
  3. Remove the power cable, back cover, motor belt, motor housing. Remove the closing plate on the back of the motor housing to inspect the motor brushes. If the carbon brushes have worn out, you will probably find some damage to the commutator bars due to the brush springs having arc-worn the commutator. Generally, this type of damage can be repaired with excellent results. Most of the time however, motor brushes are installed by a sewing machine repair person, but no effort is made to repair the damage by resurfacing the commutator to a precision cylindrical diameter. This being the case, new motor brushes will have a very short life and further damage to the motor is likely.. Amateur attempts are sometimes made by applying some sort of tool or sandpaper to the commutator while the motor is running in an attempt to resurface, but concentricity and cylindricity cannot be achieved in such a manner....If the motor brushes are good go to step 4.
  4. Examine the commutator bars on the motor armature carefully for any burned spots on the borders of the copper commutator bar insulators. If such burn spots are evident, the armature will have two or more dead spots. At this point, the motor should be replaced.

http://www.sewtechnical.com/

Jul 21, 2015 | Bernina Sewing Machines

1 Answer

Foot pedal not working


yes, it is possible that the foot pedal can go out,, it would be a good
idea to have the foot pedal checked at a repair shop to see for
sure

Aug 27, 2012 | PfaFF Tiptronic 2040

1 Answer

All power and motor seems ok but needle shaft doesn't respond to foot pedal ... nothing happens! Help! Can't find model number but it is electric Singer 70/80's


It is probably the foot pedal. There should be a plate that gives the model # and Serial #. You can call Singer at 1-800-4singer and order or go on their site and find it by serial #. There are also sites
like www.sewingpartsonline.com and see how much a universal foot pedal is and go from there. Usually, they are about $30.

Mar 19, 2011 | Singer Sewing Machines

1 Answer

My machine gergles and then the needle starts to vivbrate back and forth without touching the pedal. It seems like it starts doing this after it is on for a while.


The foot/knee control is hanging in the 'on' position slightly. Look for an adjustment screw on the control, something that will let you set the pedal position. Try to adjust it so as to have a tiny dead spot at the beginning of the pedal travel, so that you actually have to move the pedal a little before the machine starts.

lp

Jan 15, 2011 | Singer Sewing Machines

1 Answer

White 1600 SpeedyLock. Power, but foot pedal won't engage. Took foot pedal apart, mechanically looks fine-- computer board in there. Do I need a new foot pedal?


When stepping on the foot control, does the motor hum or anything? Or is dead silent? If it sounds like it's trying to do something, the serger probably needs to be serviced. If it's silent, you probably need a new foot control.

Feb 22, 2010 | White Sewing Speedylock 1600 Mechanical...

1 Answer

No power on foot pedal


There is no way to change brushes on theses sealed motors and I highly doubt thats the issue. Most likely you didn't put the bobbinwinder back togeather correctly. The small spring type clip under it needs to be in the second notch of the teeth below the bobbinwinder to engage/disengage right. If you had the cover off its also possible you disconnected the wire to the circuitboard for the footcontrol, I beleive its black and red. Probably best for a tech to look at it.

Nov 24, 2008 | Bernina Virtuosa 150

2 Answers

Foot pedal dead, machine keeps sewing!


There is no suppressor in the foot control of a 425. Only the control unit, which may need to be replaced. If the machine accelerates to full speed, it may have a problem with the "stop right" board which tells the machine whether to stop with the needle up.
You could have several problems, so go see a qualified Husqvarna repairman. You may contact Husqvarna customer service to locate the best one in your area.

Mar 12, 2008 | Husqvarna Freesia 425

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