Hi, it sounds like we need to update your TV settings to take into account the country your in and then re tune.
The quickest way to do this would be to do a factory reset on the TV itself.
1. Turn the TV On, and Press the Menu button on the remote.
2. Navigate to Support (normally last option)
3. Select the option for Diagnostics \ self help \ self dianosis
4. Select Reset
5. If prompted for a PIN you havent set use 0000
6. Confirm you wish to do a reset by pressing yes.
The TV will then take a while to do a reset, and should then allow you to go through the welcome screen and program the TV with the English defaults, if you still have difficulties its suggested you upgrade the software on the TV. This can be performed by going back into the Self Diagnosis menu screen and selecting the option for 'Software Update', this should then download the latest software patches over the internet.
Please let me know how you get on.