Oh i see, my bad. Then both drivers and the motors are good, just they dont work for X axis. That could be because of step/dir line, need to identify on which uC pin number these start and where end on driver, and check the pins.h for x_step_pin number and x_dir-pin number. Maybe these tracks have some hardware issue like shorts or such, or maybe they just have their pins numbers switched to each other in firmware pins.h. Something like this could explain it.
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