Digital tuner disappeared from Beko Panache tv setup menu. Help!?

the inbuilt digital tuner on my 4 month-old Beko Panache tv (P28C761DW) has curiously stopped working and has completely disappeared from the on-screen menu. Has it just been hidden, or is it likely the tuner is u/s? The terrestrial tuning still works. When the tv is switched on, it still comes on with the "hourglass" symbol, which presumably signifies the tv is still looking for available freeview channels.