Yeah I'm sure that's what it is because I tried all the ProScan recommended codes and none worked so I had to search for it by pressing channel up until it turned off my tv. Then I went back and checked it to see what the code was and I wrote down 11100. Then to make sure that's what it was I went back and programmed it to that code and it works.
When I press the input button on my remote a little screen pops up on the bottom corner of the tv that changes the visual settings and it switches through standard, movie, user, and dynamic settings.
I tried the couple codes you said and nothing happened for all besides when I put in the 00239 it popped up that little screen in the bottom corner I was talking about.
I don't know if it is registering that as the input, but I want it to switch through the sources like HDMI 1, HDMI 2 and so on and not just through the picture settings.