Black screen in NES

Hi,
I have opened a game of NES and well; I exit and enter another game of NES and see a black screen but listen to the audio of the game.

Rasp 3

Same problem to me.
Any solution?

set videomode to default in recalbox.conf (you should find some other post about black screen)

Work fine on my Raspberry Pi 3 (Batocera 5.8 Stable)

In:
\RECALBOX\share\system\recalbox.conf

Change this line:

global.videomode=CEA 4 HDMI
to
global.videomode=default