Cleaned up the area, retested the board and it came back to life. None were cut, but two were smashed together and shorted. Quick inspection showed some traces that were scratched. Paperboy CPU (12/6/17) – Nothing on screen, just some white raster. Removed rom, cleaned legs and reinstall to fix the problem (forget which rom it was). Pressing on roms showed that it went away when I pressed on one. Paperboy Video (12/7/17) – Lines in the “paperboy graphic” on the newspaper screen. Swapping roms into known working board and found rom at 6T to be bad. Paperboy Video (12/7/17) – Board booted with video issues. Rom error 2D popped back during testing, replaced socket and it is started working again. Started swapping sound ICs and found bad YM3012 on row 8. Self tested reported bad rom at 2D, replaced it but sounds were still off, but no longer reporting that error. Board now boots up and plays but has a sound issue. Swapped program roms and rams into known working board to find bad 6116 at 6P. Clock signal looked good, reset line was watchdogging. Cleaned up the area, retested the board but still nothing. Replaced processor socket and board played fine. Pressing on the TII processor during boot-up got the board to show signs of life. Checked program roms and ram, but they tested good in another boardset. Super Sprint CPU (12/7/17) – Board booted to garbage on the screen, clock signal looked good, but board was watchdogging. After some probing around found that 14.318 crystal had a broken leg, replaced the crystal and boardset booted fine. Was puzzled on this one as it seemed to be behaving normally based on other boards I looked at it. Checked program roms and ram, but they tested good in another boardset, which I expected. Super Sprint CPU (12/8/17) – Board booted to garbage on the screen, clock signal looked good, reset signal was low (normal) and data lines were moving. I believe there were two versions of the video boards. Haven't tried it yet, but they CPU boards all look identical. System 2 boards include 720, Paperboy, APB, Championship Sprint and Super Sprint, from what I've read they can be converted back and forth to some degree by swapping roms as well as the Atari Slapstic (security chip). Here's some of the repairs, look out for broken crystals as well, I've seen them a few times on the video boards as they stand upright and get knocked off easily. I didn't have any experience with these boards, but figured some had to be easy fixes and actually most of them were things like damaged traces or a bad socket, was surpised how many I got running. Spent some time going from a pile of Atari System 2 boards I accumulated over the years as I had 720 in the shop that I was working on.
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