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paulsherwin · 26th Apr 2019, 9:53 am

It's difficult to know how to advise you given your lack of electrical expertise. Your interference suppressor is just a capacitor and two inductors in a plastic case, and one of the inductors has probably burnt out. You can operate the pedal with the suppressor removed but this can be dangerous if you don't know what you're doing. I'm not familiar with suppressors inside the machine body - the 99K has an external motor and any suppression is inside the pedal.

There is also the question of why the suppressor has failed. It may just be age, but it's more likely that the motor or its associated wiring has a fault which is causing it to draw excess current. Does the pedal still work with the 99K?

If you still have an old fashioned sewing machine shop in Hamilton you could ask for advice there.

26th Apr 2019, 9:53 am	#2
paulsherwin Moderator Join Date: Jun 2003 Location: Oxford, UK Posts: 27,937	Re: Vintage sewing machine suppressor help! It's difficult to know how to advise you given your lack of electrical expertise. Your interference suppressor is just a capacitor and two inductors in a plastic case, and one of the inductors has probably burnt out. You can operate the pedal with the suppressor removed but this can be dangerous if you don't know what you're doing. I'm not familiar with suppressors inside the machine body - the 99K has an external motor and any suppression is inside the pedal. There is also the question of why the suppressor has failed. It may just be age, but it's more likely that the motor or its associated wiring has a fault which is causing it to draw excess current. Does the pedal still work with the 99K? If you still have an old fashioned sewing machine shop in Hamilton you could ask for advice there.