For months my Samsung Smart TV was missing a complete 16:9 aspect ratio. Tried every suggestion to fix it. This began after Comcast changed our associations cable boxes and the HD Cable Box. Recently saw a comment that HD BOX may be the problem.
Finally a technician came to diagnose issue and maybe change the HD BOX.
FIX: The COMCAST REMOTE that was supplied with the change WAS THE WRONG ONE. The NEW REMOTE had a key below the "9" Entitled HD ZOOM. Click on it and keep clicking on it until full image comes up.
Now I can see a full TV image in regular view or select the channel in HD and fill the entire TV window.
Looking forward to seeing future "scores" fir all sports and more.
CONCLUSION: All supplied hardware has to be compatable.
