Thanks for your input. I have tried to run g-code with the spindle on but the same results. The machine is wired 230V 3 phase but I have 208 3 phase in my location. I did try jogging the z-axis repeatedly and it does not back up. I did check the bridge rectifiers as described in the manual. I checked the voltage on the x,y,z axis at the fuseholders per the manual and found 37V but it drops as I hold it longer. I checked the output voltage of the 56V power supply and it has about 54V. When I hit the limit switch relay CR1 the voltage drops to about 33V. Also, the manual said to check the current of the x,y,z at the fuseholders. I get no current there. I also checked inside the machine for chips or other stary matter. I also changed all the fuses. Thanks. |