under the actual dot by dot mode:
Connect from satellite box directly from HDMI output to the HDMI of the LCD. At aspect ratio of 16 x 9, I missed all the edges on HD channels. (top, bottom, left, and right) So I switch it to 4x3, and I gained back all the edges. But as soon as I switch from a HD channel to another channel (HD or SD) and switch back, I lost the edge.
Then this time, I switch back from 4 x3 to 16 x 9. And I gain back the edge again.
Then if I switch out of that channel to another channel, the above cycle repeats again
Connect from satellite box directly from HDMI output to the HDMI of the LCD. At aspect ratio of 16 x 9, I missed all the edges on HD channels. (top, bottom, left, and right) So I switch it to 4x3, and I gained back all the edges. But as soon as I switch from a HD channel to another channel (HD or SD) and switch back, I lost the edge.
Then this time, I switch back from 4 x3 to 16 x 9. And I gain back the edge again.
Then if I switch out of that channel to another channel, the above cycle repeats again