RE: Futaba 9C super issue--Need help Bax
If you get the same thing happening when you create an absolutely new model, or have an old model and reset it, then we'd believe that there's something wrong electrically inside the unit. It should be sent to us.
If you do a reset of a model and the problem goes away, then you'd have to go through every menu option and setting to see why your transmitter's acting as it does.