I have tried that Ralph. What is going on that would cause the solenoid noise if a switch is open? I Thought for the solenoid to operate, the stitch must be powered up?
Sorry mate , what i meant was the switch must be staying closed for some reason and energizing the solenoid,
Maybe the switch is not being moved enough to fully open , and the coils stays 'on' .
If you look at what operates this switch( a mechanical arm? ) and try to adjust it , or it may need freeing up ...