Issues with connecting monitor to xbox 360

I'm working on an Xbox 360 laptop and was soldering some ribbon cable to the AV pinouts on an Xbox 360, as well as to the vga pinouts on the controller board for the monitor. Anyways the monitor works fine since I was using just a cable. Wondering if anyone knows what the issue would be? I followed all the pinouts correctly but it gives me this?





i also ended up stripping the cable one at a time away from the ribbon cable so it would be individual wire, made sure there were no bridging with the cables, but now it doesn't give a signal.

the set up i have for it is the R, G, B, H-sync, V-sync, Use VGA, and ground.

do i need to bridge the ground pinouts on the A/V together? so like bridge pinout 2 with 4 and 1 with 3? or do i just need on master ground?

 

Could u post clearer pictures of your soldering. What is the voltage coming off V and H sync? I know that with the DC the voltage is about 3.5v and the vga monitor needs a signal of 5v. Also some caps on RGB and diodes between V and H sync and GND. Use the DC vga mod schematic as a reference. ground points on the VGA side should be pins 5,6,7,8 and 10, not sure how it works for ribbon cables.

 

If you are using ribbon cable you might be getting cross talk, use twice as many wires and put GND between each signal