I finally managed to mod my Core II to give RGB out signal. I have to say it was tricky and had a lot of work to it because unfortunately there was noway I could fit the amplifier inside the case of the console. Absolutely no space for that in there.
Finally I had no other choice but to install the amplifier board externally, something that I didn't particularly like but as I said, there was no other option so I tried to make it as "clean" as possible.
Here it is....
8 pin jack fitted instead of the 5 pin that was originaly there. Fresh electrolytic capacitors were fitted.
Signals were picked up from the expansion port instead of the chip's pins.
Amplifier board fitted externally on the TV cable.
Final result, perfect colors, perfect brightness and image clarity.