N64 NTSC-J RGB Amp problems

Yes reconnect the pins from the DAC, and then use the R,8,9,10 points to your Amp

 

Well, I've done that and I'm finally getting results - However, the entire image is a yellow hue (attached image) Any ideas where I'm going wrong now?

 

Must be a short or similar.
Is green or red perhaps touching anything/eachother?

 

It's a Christmas miracle!
After disconnecting everything and starting from the beginning, I couldn't get rid of that yellow tint. i was about to give up, when our of curiosity I gave the video chip a little poke to see what connection was flaky, and everything went back to its normal colours! I heated up the video pins and their connections to the board a little, and now it works great.

Finally, I've got my N64 rigged up to my Framemeister with a far better RGB mod, and I'm very pleased with the results (pictured)

Thanks for all of your help!

 

Happy to hear you got it working!
Sounds like something wasn´t problably connected on the DAC.
Enjoy your RGB N64! You have earned it!
What sync did you end up using btw?

 

Thanks!

I ended up sticking with Luma Sync (pictured). If I wanted to change to CSync, how would I go about that? Would there be any benefit, bearing in mind I use a Sync stripper anyway (see pic)?

 

Well since you are using sync stripper and framemeister I don´t see any need for it.
If you wanted however, you should cut that trace and connect the 2 pins as mentioned earlier and then rewire the cable for Csync instead of Luma.
But I wouldn´t bother if I where you, since it is a good looking setup you have already and it would not make much of a difference

 

You need to reconnect the lifted pins from the dac back to the board. desolder the cables from the pins and bend them carefully back down and solder them tight.

There were no official Nintendo RGB NTSC cables. the only official N64 RGB cable was for pal french model, even they didnt have the rgb circuit onboard from the factory in the consoles.

i cut the trace for composite sync on the multi av on the n64 board and rerouted the c-sync to it as most of the standard cables use composite sync pin in their cables. with pure c-sync there is no need for a sync stripper. as for luma its as good as c-sync. but some tvs dont like luma as sync, so c-sync might be the best choice.

have you opened your scart cable and had a look if it has caps in the rgb lines and maybe one in the sync line combined with 75ohm resistor?