Hello! I have a Philco ATV11 TV-BOX and run it on an old CRT TV. But because the picture is made for 16:9 aspect ratio screens, it looks shrunk on that TV.

In the options I don't see a way to change the aspect ratio from 16:9 to 4:3. Do you know if there is a custom way to adjust the aspect ratio of the device in general? Thanks in advance!