Googled from another forum, posted in january this year.
Not sure if it's helpful lol :
Dear ######
Thank you for contacting Samsung Electronics.
Customer Reference: ####
Thank you for contacting us regarding your LE40B550A5W and the recent issue you have experienced.
The integrated Freeview within your television will not be able to process a HD Freeview signal, to enable this the television digitaltuner must be DVB-T2.
Currently Samsung Televisions along with all other manufacturers are only able to receive the current standard definition FREEVIEW (Digital) broadcasts on DVB-T.
The new High Definition transmissions will be broadcast on the new specification DVB-T2, these transmissions cannot be viewed on existing & current Freeview (Digital) televisions.
It is expected there will be Samsung televisions able to receive the new DVB-T2 transmissions next year.
I hope this has been of some assistance to you. If you do have any
further queries, please donot hesitate to contact us quoting your ####
reference number.
KindRegards
Amy