This set is a good tv,iv only ever had freeview problems with them.Changing caps c940,c912,c908,c934.Has always cured all freeview faults.
CHASSIS 17MB16P-2
It has the external power supply.
Well this one had no freeview,analogue ok.Although i did not check sound.
Changed caps up came freeview as per normal,but i have no sound on analogue or freeview.
Any help or a service manual would be great.