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So I was able to get the screen working. I was getting picture and sound from my NES, but the controllers were not responding. so I decided to make a few adjustments. when I finished and turned the whole thing back on, I get a significantly darker screen with no video on the screen. I am also unable ...

So I'm following the walkthrough in the Ben Heck book for the hand-built NESp. I am reading over the "attaching power connectors" part of the book. I am missing part of the book, because I got it from the library. So, my questions are:

1.What the heck is the phono jack for?

2.There are 2 DC input ...