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Old 30th Sep 2021, 1:26 pm   #1
M3VUV51
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Join Date: Feb 2018
Location: Horncastle, Lincolnshire, UK.
Posts: 203
Default Singer 2502C pedal repair.

Hi all,i have a singer 2502c sewing machine,the issue is with the foot switch,it is either on or off,there is no ramp up of the power,its like flatout or nothing,so far i have tested the bt134 triac with a dmm,it seems fine,any ideas what the issue could be,would a duff cap or diac cause this?,i have measured the caps for s/c they are not shorted,not cheched capacitance yet or esr.attached is a pic of the pcb,have no idea of the history as just brought it for spares or repairs.
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