The Majestic TV is a Global TV so it has multiple TV Tuners (on the rear there is USA TV Antenna Socket as well as European Antenna Socket).

Firstly make sure you have your Antenna connected to the USA TV Antenna Socket.

Then follow the Tuning instructions:

Press the Source/Input Button on your remote - you will see various Inputs can now be selected.

Do Not Select the First Two DIGITAL TV - as they belong to the European TV Tuner

Scroll down the list - and keep going until you reach USA TV

When you find USA TV - then select OK 

Now you are in USA TV Mode.

Please make sure you select either Air or Cable for the correct TV signal to be tuned in.