Until now all of my problems have had to do with trying to make some kind of a change or trying to understand something. This post has to do with suddenly being out of business. And while I'm mostly a hobbyist I'm also in the middle of developing a product which will be marketed to hospitals to be used in emergency situations. So I hope I can resolve this quickly. My X axis has gone crazy. Right smack in the middle of making a part it started making a grinding sound switching directions back and forth ignoring the g-code and spoiling the piece. A few times when this happened I clicked on STOP and then maneuvered the axis with the keyboard. When moving the axis that way I continue to get the grinding OR I get a faint sound from the motor that produces no movement. I ruled out a faulty g-code by writing a simple program that would have it going from X north to X south 20 times. During that program it repeated the aforementioned behavior. So it seems to me that I must have a bad Gecko or a bad motor. Does anyone know how I can definitively determine if it's the motor without swapping it with another axis. My Y motor won't work because it has two shafts while my X only has one. The Z axis might take hours to show up as defective because it doesn't move much. The absence of failure on the X axis with the Z motor would leave me wondering if it just hadn't failed "yet". Would appreciate any advice on how to know for sure if it's the motor. PS: Motors are 640oz