Great! I have tomb raider 2 and it does have an FMV sequence that is compatible. I now see that G3-G5 are not lighting up. I've checked those connections with a multimeter and resoldered them as well but I'm not sure what the problem is. I'm thinking I just need a new flex cable at this point.Any FMV sequence I have found is 24bit. Which is most intros of games, like FF7 etc.
It's G3 - G5 that isn't lighting up. Also I randomly found an ea sports game.Can you try a different game for me and also take a pic of the test/info screen and post it here.
The video data might not be changing on the LSB. In some games you might see X's during black segments or lesser colors displayed. It doesn't make sense to have R7/G7/B7 be the only failures.