ths7314 rgb bypass in a fat super famicom rgb 01

I'm tryin to bypass rgb with an old super famicom (sns-cpu-rgb-01) with a ths7314 to see if the av quality changes but with no luck

I found only guides about one chip's and mini's and can't found the right spot to get r,g,b lines so I lift the r,g,b output from s-rgb a chip and get rgb from the r,g,b input of s-rgb a.

but this way I get a really really dark picture. It seems that behind the dark red, green and blue are present but is not right this way.


where's my fault?