Like Annette mentions, for the 930 electronic you have to repair the old controller or get a model compatible one. I think you might be able to track one down with a bit of search. If I remember correctly the 930 has some functions in the pedal that works with the circuit board on the machine.
The 930 is a gem of a machine, extra strong motor, a few stretchy stitches and is a dream to work on. This is a model worth spending a bit of time and money to get going again. I think some clever guys have found a way about the circuit boards, the by pass them some how and can use a generic pedal. Some of the funcitons are lost though. It's a bit of a rogue repair, but for some it has worked. I have to say I would do my best to get it right with this one.
Last edited by Mickey2; 12-01-2017 at 06:50 AM.