@Substring yes i did. In recalbox.conf i added global.videomode=default

Hello,
i tried the tutorial in :
Connectez votre recalbox à un CRT avec composite.
It worked as far as into the recalbox menu. Picture on my Sony
CRT was good. The i started a game (i tried multiple systems) and the picture in the game was gone. I could still hear
the sound of the game, so it was running. Then going out of the
game into the menu again was also not possible. Picture was still gone, only audio was there? There is a reboot needed for getting a picture on the menu again. What could solve the problem? Thank you