Have a Masso G3. Been working fine, but today, I go to turn it on and I get thumping Z axis motor, no boot screen, and the green light blinks 4 times rapidly.... I disconnected the Z axis motor, repowered up the machine, and the Y axis motor starts thumping.. Running Clearpath motors. Nothing else connected besides stop switch. Hoping this is a simple fix.. Just getting this shop off the ground. I can't afford to be down with this thing.