I have had my Samsung smart Tv paired with Mac book pro for some time. It drops off from time to time so through my Roku I acess youtube, do the pairing process but now when I try to get the code it is cut off so that I can only see just barley the tops of the numbers. I have adjusted the ratio on my tv and Roku. I cant scroll down to see the numbers to pair the TV. Haven't incountered this problem before. Any input would be greatly appreciated.