To give a little background on this system...I bought it and it came with AV cables. Everything worked fine. I was told the system had the rgb bypass mod, so I started using it with an rgb cable. I used rgb cables on it for a little over a year. I decided to sell it, and had had the system in storage for about two months. Knowing this I pulled it out and tested it via scart for about an hour and then again for another hour before I finally packaged and shipped it to Beff. Beff was aware that the system came without AV cables, so he bought a set on eBay that only had 4 pins in it. The general conclusion in chat was that it was the wrong cable, but apparently a second one hasn't helped.
And before the hate train gets fueled up, I ended up giving him the system for the cost of shipping and $40...so don't even get started.