Ok long story short, I'm once again trying to get my NES portable working. Problem is that after I wire everything up all I have is a blank black screen. As far as I can tell the screen works fine. Here's a diagram of how I wired the NES to the PSone screen along with the video amp.
For Power I'm using the PSone LCD power adapter which is 7.5v and 3A. While not shown I am lowering the power to 5v before putting it into the NES.
Any ways, hopefully I'm doing something really dumb that can be seen here.