chregu

Sure, you can use my drawings as a starting point for the NTSC version. It would be nice if the NTSC version is also publically available on github. It would be a completely different thing to use some "atari on a chip" thing. My goal is to build a identical replacement board. If this is done, I'd like to build a more modern version of the board, still using the same chips and layout and case. I probably will change the video output to composite or a combined composite / audio connector and add a pause mod with the now unused channel switch. Another idea is to change the power connector for using a usb power supply.

This is a PAL board.

This is the first replacement board compared to the original one. Not all is perfect yet. I need to move some things a little bit for a perfect fit. Next thing is soldering everything back and check if it works.

I just reverse engineered the 2600Jr PAL schematic and PCB in KiCad. Maybe it is of help. I should receive the first 5 PBCs within the next two weeks. Hopefully they fit well. https://github.com/chregu82/Atari2600Board I'll probably try to get some modifications into this board, maybe even build something more modern.