I picked up an overlock sewing machine for a VGP , but I suspect the control is dead . I'll keep looking for a wiring diagram for the motor just to be sure I don't let the magic smoke out while testing it . But the control unit - looking at diodes and power regulators makes me think the output is going to be DC . I'm just not sure of voltage or which terminals do what . I think it's a dual-range speed control from the switch on it . No obviously damaged devices n the control board , I don't see a fuse . I'll be checking diodes and some other components as time permits (winter is coming , right now the priority is firewood) , it might be as simple as a blown diode . I already cleaned the speed control device , next was going to be the power-on micro-switch . If anyone is familiar with Pfaff overlock machines from around 1990 I'd like to pick your brain ... this one is a model 786 Hobbylock machine . The motor and mechanisms in the machine are free and apparently working correctly , no timing issues .
1 week ago