The settings for each input should be independent of each other. So if you have AutoMotion Plus on High on HDMI-1, and Low on HDMI-2, it should remain that way.
Based on your description, it sounds like your television is in Shop Mode. Using the television bezel (and NOT the remote), you can change this either one of two ways:
1. Hold down the MENU button on the front of the TV for 15 seconds until you see the picture flash.
If in 15 seconds you see no change, try:
2. Push the volume button up on the bezel, lift off, and immediately push and hold the MENU button for 15 seconds (repeating the process, but pushing up the volume first).
After that screen flashes, you should be able to switch your settings and have them stay.
Keep me posted!
I just got my LN52A750, so far I am loving it. My only issue is - is there a way to set up a default input setting? For example in HDMI-1 I have my PS3 hooked up and I want to turn off the 120 mhz without have to turn it off each time i watch a movie.
One more thing is when I turn the 120 mhz when I am watching a movie about 20 mins into the movie it will turn itself back on.
Does any know if you can set a defult, or know why it is turing itself on?