Ypbpr SNES componant mod

Hello everyone !

im new on this forum, thanks

so i have a problem, i have made this mod:

SNES_YPb_Pr_Circuit.jpg


i connect my SNES to the TV by Componant to VGA cable and my screen is green !!
if i deconnect Red or Blue still green !!

what is the problem please ?? (maybe grounds ?)
 
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