Without the pololu the pocket works but not enough power for a flashcart. Mods added have been Li-on battery + backlight + decoupling cap. When I wire in the pololu regulator and turn on the gameboy the backlight goes on , i hear the sound of the game actually playing, but no picture. After removing the pololu it works again like before. So i googled a bit and found out people mention cutting pin 4. After doing this i still have the same problem with the pololu attached. The schematics i used is the following http://i.imgur.com/FBYejzZ.jpg. Thanks for any help.