I have my G98DH/G68XXV set up using the G98 as the video switcher as you want to operate.

You can't scale the Component output from the G98 - only the HDMI. You can deinterlace to 480p using the G98 by setting the scaler to "scaled" and the setting to "Deinterlace". You get standard 480i by setting the scaler to SD. Any other setting produces no output on the component terminals. This may be your problem.

Malcolm