I am not sure where to start. I have Mach 3 and the USB Motion Board AKZ250 I have a 220 v 2.2kw 400hz water cooled spindle and the Hyuang ( spelling) VFD. It was working fine, then when the file ended it would not shut all the way off, so I turned the power off to the Hyaung VFD, then powered back up now the spindle wont turn at all. If someone could point me where to start I would appreciate it? Thanks