Not running 2 video sources into one. Just running one game output to AV2 input. Got same frozen video results when testing game with AV1 input on back of unit. No other Ipods or video sources. Seems like AVIC refuses to refresh screen when using Jakks game console (BTW, AVIC tested fine with other video sources, and Game tested fine on other TV's).
I still think it's signal strength or maybe not quite NTSC standard. I wonder what it would happen if I run the game's video signal through something else (video camera, old VCR, whatever) before going to AVIC. Might try after vacation.