Originally Posted by
HomerSimpson
I did a thorough series of swaps and determined that the X1, X2, and Y servo control boards have a fault, and the Z axis board does not. I measured the voltage across the H bridge resistor and the value for the 3 faulted boards is about the same, and substantially lower than for the Z axis board. I purchased the Omax support contract so I could get their help but all they have been able to suggest is to purchase new boards at $1600 each. I'm going to see if I can save the boards since they all power on, there are two green lights on each, one that flashes rapidly, and all drive motors are getting power.