I'm asking help for s-video problem. JVC that I have has Y/C 358 connection for s-video and and found Hirose plugin from ebay and I made cable for it so I can plug whatever to it ( it doesn't have RGB on it). But I cannot make image stable. It 'flickers'. I attached to photos. Monitor has V.Hold control and it has screw under it but it cannot stabilize image, It can make composite image stable but not s-video one. And I don't have manual for it.
Do I need to make changes to cable, add some components to it or what?

