Quote Originally Posted by JAZZCNC View Post
Irving this is a TB based pile of rubbish board and it will die if so much has looked at in a funny manner so ya can bet ye last dollar it will DIE even in halted state with the slightest spike. . . . Rich it will 100% DIE if steppers powered up and you unplug. . . Just turn it off it's honestly not worth the risk for the 20 seconds you'll save.!!
I run a 5 axis TB china job and plug/unplug the 4th axis stepper all the time (as irving describes,,, in standby... nothing going to motors)

iv earned a quid or two on that "TB based pile of rubbish board" so don't be to disheartened richie00boy

I must admit though, I am tempted from time to time to bin it and splash out on something slightly more robust.... on a 5+hour run its lost enough steps to have a measurable error from the origin (0.2mm ish)