I spent the better part of this afternoon addressing my Nintendo 64 RGB problem, as you may recall I had sync issues with the Nintendo 64 and my Commodore 1084.
As it turns out, there was no sync signal on pin 3 at all! I had to make a connection between pin 14 on the U4 VDC chip and pin 3 on the Nintendo 64 multi out. I had read a bunch of tutorials/guides on adding RGB output to the Nintendo 64, but no where had I read that there was a need to add the sync signal to the multi out.
I also added an RGB amp (quick and easy mmmonkey mod method
) and switch while the Nintendo 64 was open.
And to round the entire project off I wired up a custom RGB dongle!
Finally! Nintendo 64 RGB!
Edit: A couple of pictures for you folk...