Sewing machine electronic style foot controller

thorganby

roytom wrote: »

What I think I need is a replacement slide potentiometer. RS Components has one described as
Bourns PTA Series Potentiometer, 10k ohm, ±20%, 0.1W, Through Hole
RS Stock No. 737-7776 Mfr. Part No. PTA2043-2015DPB103 Brand Bourns

The existing one is 35mm long 7mm wide and 5.5mm deep approximately.
It has a code on it 89501 10KA

Please forgive my ignorance but would this be a possible match?

Thanks again

You need to adopt a more logical approach to fault finding.

I think that you are barking up the wrong tree regarding replacing the foot pedal potentiometer, especially as you have already tested it with your multimeter and it is working correctly as expected.

Watch this video

https://youtu.be/kEDLc1kGzEw?t=105

and try disconnecting the motor interference capacitor located in the sewing machine. If this is successful you can then source and replace the faulty capacitor.