sudomod

hello guy,
i have finished my build. but i got a problem, when i turn on the pi, everything works but i got a white screen.
here are some pictures so everybody can see the connections i made,
somethings to clarify:
*in the sd i installed retropie with normal img.
*when i connect by the hdmi i have the retropie image
*when i turn on i have a white screen

[spoiler="the board of the screen"][/spoiler]
[spoiler="the back of the pi"][/spoiler]

sorry for the potato photos

Maybe you should attach the screen to some other device with composite, so you can test the screen itself first.
If it works, (for instance with a digital camera or something) there's a problem with the video out from the pi to the screen.
You should also try a new image, and or check video settings.

GL

Did you activate the AV out on the pi ? my guess is that it's off by standard, think you have to switch it on first (on the pi)