ok sorry
rca cable..not scart !!! i'm stupid
ok now,video is acceptable.. but audio is crashing white noise.
so the video signal is revert, i've got verified with an osciloscope.
the video ground is the exterior of the axil rca, in this way to have video, perturb the audio channel ground because we put the axil video signal to tv ground pin, and the axil video ground to the enter video pin.
the the only way to have at this moment video and bad sound is to just put the middle pin af the rca under the axil, the exterior (mass) must do not touch the axil connector.
if someone could find better !!!
did someone has a good sound ?