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Weird stuff!
I found a troubleshooting page for Magic 3 chips, thought It might be useful, it said to check reset and S points which are 13 and 9 on the Apple Pro. My 9 wire looked good but 13 is one of my thin laminated wires so I replaced that and 22 as well.
Put it back together, tried a Ps1 backup I know works... nothing, nothing, red screen, nothing... I was about to give up, tried one last time and released reset about 1 sec after blue light, “Schwuck”, there it goes with the PS1 logo and loading fine. Tried it 2 more times, works!! Maybe I was holding reset too long?
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