Hello, i have been using a chinese laser machine for a while but suddenly after connecting the rottary axis, the it stopped moving along the y-axis, i have checked all the connections are fine, when i move it home manually after powering it of it accepts, when i drive it with the x & y controls using the soft ware it accepts. what is puzzling me is thwt it doesn't home along the y-axis instead it makes noise,what could be the problem and its solution. thx