Prusa i3 cant print axis keep stoping

Hi im new here and im new to 3d printing

So i build Prusa i3 all works Pronterface apart from y axis looks sleepy some times its refuces to move.

Have to keep restarting it to get it working when its start move it moves ok till it freezes again. DONT KNOW WHAT TO DO

Extruder extrudes ok when i press extrude so all works ok to point.

But when i press print all go funny its prints first outline then extruder stops spining y stops moving X moves forwards and backwards in same line but in Pronterface shows its printing ok witch not.

what can couse this?

Wiring is ok soldering is ok

Using ATX

End stops fine Homing fine

CANT PRINT

Regards

Here i did video to show whats wrong with can u see it keep stopping and extruder running y axis not eved to o.

[www.youtube.com]

Any one?

Possibly current to high to stepper driver and it is overheating.

---

Bob Morrison
Wörth am Rhein, Germany
"Luke, use the source!"
BLOG - PHOTOS - Thingiverse

Thanks for reply!!!

How to solve this by adding Fan to Ramps board or change Power Supply ?

Regards

Have you set the vref voltages on the stepper motors?
Have you calibrated the E steps for your extruder?

Steve

Thanks For reply!!
No I did not set VREF Voltages how to do it?

Yes I have calibrated extruder using formula is that correct.

Regards

Thanks sorted ajusted VREF start working fine thanks