the rgb pcbs arrived;
rgb pcb.jpg
they work fine with the substitute RGB amp, which is a relief. picture quality is as you'd expect from rgb... almost too clean :lol:
I realized I made an error in fabrication, I made up the boards according to the project page on OSH labs website;
https://oshwlab.com/yannick.erb/Intelli ... _copy_copy
I missed the caveat on the schematic that the 10 meg resistors were placeholders and not to be mounted. Given that 10 meg is likely functionally indistinguishable to open circuit in this case I'll probably leave them on. Red and Blue both use 2 of these 10 meg resistors and the colours look good.
I had some shearing at the top so I modded the board as detailed here;
https://consolemods.org/wiki/Intellivis ... ck_RGB_Mod
The RGB mod removes the need for the composite generating daughter card. I've thought of mounting the RGB PCB in its place, possibly reusing the connector, but I prefer to modify the internals as little as possible and make stuff reversible. Finessing the install is the next step now I know it works.
I'll probably go with a similar solution to the master system 2 RGB mod, removing the modulator and fitting a 8-pin mini din in place of the RCA, something like this;
https://www.consolesunleashed.com/guide ... all-guide/
Also got the PiRTOII PCBs and mode one up with the Minty firmware, Impressive stuff.
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