Re: Syil X3 Mill Spindle Speed Control Board Replacement
Well done!
With power off and removed..
Check for loose connector wires.
Give them all a tug. Sometimes the wrong crimping tool has been used to manufacture loom parts.
A poorly formed crimp on a connector can cause this problem.
Also random leakage path to chassis can fry regulators. Think dirty looking pcb surface where moisture can create a path to chassis.
Super X3. 3600rpm. Sheridan 6"x24" Lathe + more. Three ways to fix things: The right way, the other way, and maybe your way, which is possibly a faster wrong way.