I had the honor and chance to contribute to the resurrection of the HNF's APPLE-1 board. As Jochen Viehoff had mentioned in part 3 of the video (no link her to the videos on youtube, as I hate advertising), I had written a detailled plan for the testing the board before and during the powwer up, which is available here: testing_apple-1_notes_rg.pdf.

Note that – according to the manual – the number 1 is a roman numeral for the APPLE-1, while the successor uses two brackets similar to a Roman II.