Evidently you have power to the unit and with the new fan and motor, you have only to look at the control wiring. Does the compressor come on without the condenser fan? If not, check the transformer which is fed by larger wires of 240v and on the output side where the small wires are should measure 24v. Once you eliminate the transformer, check to see if the 24v is getting to the outside unit. Then, finally, it is possible the thermostat is bad.