It is a good idea, to keep the box open not in a closed box and in a place where no other equipment except TV is there.
Step 5. Check TV Inputs
Check on your TV either you have pressed the correct TV input or not. Generally, Freeview can be seen in Video or AV mode.
Moreover, most of the TV remotes use a button labelled as “AV”, “SOURCE”, “INPUT”. Press this button and select AV /HDMI or Video mode as per your box.
Step 6. Remove Obstructions
Obstructions can sometimes block your dish getting the correct signals. The obstructions include tall trees, constructions near your home, etc. You need to remove these obstructions to give your box the accurate signal.