Hi ,
I finally convinced Chinese guy to resend a new board. Before doing this i bought a new ardunio uno and cnc shield with a4988 (same chips on the board) stepper motor drivers. I ve tested motors . They dont have any problem and running properly . I have to prove this to seller. So he/she has to sent the a new board.
i ll write that it was running properly or not when new board arrives me.
Thank For Your Support and Sharing.