Neo Geo AES help

Hello Tech talk!

Been awhile since I posted. I just recently came across a US Neo Geo AES for a bery good price, but when I got home and tested everything out, the colors as you can see below are pretty washed out. Its plugged into an HDTV and I figured it would look horribly pixelated but the colors just look bad.

I was wondering if this would be an issue with the system, the games, the cords, or just compatibikity with the TV.

Also from the back, it looks like it may have been modded?

Any help is appreciated and thanks!