Had the issue where motors worked but no heat. Found out I had set the “Dry Run” radio button on the Repetier Host > Manual Control to “on”. It was dry and cold alright Hope this helps someone...by burtburt69 - RAMPS Electronics
I had this same issue with a Prusa I3. I decided to join the forum and stop fixing issues on my own and not giving back. So here's what I found. After looking at the Y axis motor... now my Y axis is under the bed. It's the bed axis not the extruders axis... What I saw was that when I tightened the Y axis down hard the Y axis motor mount would tilt. It would tieter on the mount and the driveby burtburt69 - General Mendel Topics