Was changing the thread when my Singer sewing machine started going very fast on its own and smoke came from the foot pedal. What is wrong and can it be fixed?

Clare, August 2005

Very old post I know, but if it is a 5XX series, then replace the two 0.1uF capacitors in the foot pedal. This info only relates to this particular pedal, and you fix it at your own risk. The capacitors are typically 0.1uF 250v, and can be replaced with similar modern capacitors. I just purchased 5 for £0.99p - Description as follows. KEMET CAPACITOR 0.1UF 275V polypropylene 5 pcs RoHS OK - any 0.1uf Polypropylene capacitor rated 250V or above will do so long as it fits in the generous space in the pedal. 110V pedals may have a different value for this part, so check before proceeding.

Andy H, January 2011

It is just the capacitor inside the pedal that has failed. It can be replaced and the pedal will probably work fine.

C., March 2007