Hi! I'm experiencing this same problem. The printing seems to fine until (normaly after 3minuts) it stops! this is happening while conected to the pc or SD card....i've noticed that the PSU becomes noisy and soon after printer stops. Another strange fact is that on the screen the coordinates of the axis are still changing, but any of the motors and extruder are working. Cheers João Costaby jpfcosta - Reprappers