No display after installation of mod chip

Hi

I took my GameCube apart and installed a Pico board thing as I wanted to mod it. Followed a guide on YouTube from a guy I've watched before and following them. The GameCube turns on but has no light on the console it flashes orange but then nothing. I know it's on because I can hear the fan. I've got hdmi thing but that only shows a blue screen I don't know what's wrong exactly not sure if the hdmi thing isn't working or if it something to do with the actual console.

I've done as the guy in the video done with soldering soldered each point that needs to be done

If you need more information let me know hopefully someone can answer this