Lack of voice instructions Go Premium 5" purchased July 2019
After satisfactorily setting a destination :
I no longer receive the usual voice instruction as to time of arrival at destination,
I no longer I receive voice instructions for upcoming turn instructions, when on route.
The sound volume is set to 100% and for example when I select the various "voices" each one does emit the appropriate "my name is etc etc).
The display is OK.
Any thoughts would be greatly appreciated.