What's also interesiting is where the wires go to - on my RF board the order of the wires are:
And the order off the PCB (after the factory fix) is Brown Orange Red Yellow
EarlWB, looking at your photo the order of the wires from the main PCB is Brown Red Orange Yellow (the order they would have been on mine if they hadn't switched them).
Suggest you check your RF module - if the order is Brown Orange Red Yellow like mine, then one of us has switched wiring!
- PPM in - Yellow
- SW1 (assumed for range check switch?) - Red
- GND - Orange
- CC_5V - Brown