Over the course of a few months we are getting pixalilation and blanking when watching/recording HD terrestrial channels on BT TV. We were avised to reset the box which we have done a few times without this making much difference and we have checked all our connections and they seem okay.
When checking the signal to say BBC1 in BT TV HD the signal strength and quality is normally a 100%. In freeview and freesat which we have the quality of the picture in digital and HD is perfect without any deteriation in the picture quality. The problem only appears to present itself in BT HD mode on terrestrial channels.
What does the community recommend to solve this problem and how could it be implimeted?