My Prusa i3 has developed an issue.
It homes fine and has no issues. But, when I press the print button it gives a sneeze (quick screeching noise from the Z-axis stepper motor) and start to print. The only issue then is that there is no lifting on the layers when it prints! When I kill the print, it stops, lifts and goes to the home position as if nothing is wrong.
Video link: Prusa I3 Z-axis issue
Does anyone know of a remedy for this issue?