Plug a servo directly into one of the receiver channels that doesn't appear to be working just to be certain the receiver isn't the problem. It sounds like none of the channels associated with the single wire connections between the Cortex and the receiver, are working, only the ones with full, 3 wire extensions correct? If you are positive that you have the single wire connections plugged in so they connect to the signal pin on the receiver channel then I would connect the Cortex to the PC interface. There is a screen that should allow you to monitor what activity the Cortex is seeing on it's inputs. You are using the provided wiring loom and not SBUS or something, correct?
Last edited by wfield0455; 09-25-2014 at 01:05 PM.