The AEL ELV and RUD channels are reversed if you have a 9503, should be arming to the right.
The spektrum module light should not come on with the TX off so something is wrong. Use a normal extension on the satelite and keep it away from the motor wires and see if that helps.
You were arming so I'd guess the calibration of the low end of you esc's was set too low. If the AQ doesn't go below that point they won't arm.