This version of the NES Power Board is compatible with Tim Worthington's NESRGB mod and replaces the original NES frontloader RF module. The following options are available:
-NESRGB output directly to an 8-pin mini DIN connector, composite and mono sound to the side output jacks. (Requires existing RGB mod)
-NESRGB + s-video + composite using a Retrofixes SNES style multiout connector. (Requires existing RGB mod)
The first option requires no modification to the shell. The SNES option requires some cutting of the shell, but it is minimal.
For now, native composite video out is not supported. Hopefully an upcoming revision will be compatible with the original composite video signal or with NESRGB.
The necessary components can be ordered from Digikey or Mouser using the supplied BOM, and the PCB can be fabricated using the supplied gerber files. Check out https://youtu.be/1xAclbcCRYE for more details and a demonstration of the power supply module in action.