As above really .... does it mean I will be needing a new one soon ?
Only does it first job in morning then maybe once during the day ?
Which Type digital controller is it?
It may be a battery charge issue as the current digital controls out there will shut down if less than 11V or 10.5V ( depending on which control) is detected at the controller.
Also check all the connectors and for any poor or broken connectors/cable.