Okay, problem is solved it was motor cable and actually both cable.

I dont understood why both cable can die same day, anyway this is very cheap repair thank you.

--Ari

Hi,

I have problem whit Z-axsis stepper motors.
I purcase my duetWifi board 20/03/2018 and everything is working great, until yesterday my printer start sound weird when i try go z-home. I noticed that only motion i get z-axis is wierd flutter.
I check wiring and eaven change diffrent steper motors but not get any real motion in z-axsis, xy-motion works normaly.

Do you have ideas what can cause this?

--Ari