@wurth51 if you get a short between Vssa and a higher voltage then you should get a message on the DWC console warning you of the short.

The driver chips require the 12v supply to operate. It would seem U14 has failed.

Please send an email to warranty@duet3d.com and CC your reseller. Include a link to this forum thread and the details of your original purchase. You'll receive a reply with a form to fill out.

Thanks for the suggestions. I'll explore that path first. Discovered that I can get a new one from Digikey for only 10 bucks.

Edit: Well Digikey was out of stock, so went to Mouser.

@Veti I just tried this but now I can't control my Y axis. Would you be so kind as to tell me what g-code I can send to undo this? Thank you!