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...and for everyone else looking at this and wondering about a conclusion: Red arrow need to have +5VDC connection to get proper data signalling to/from U30. There are a couple close points to connect to: C138 pad closest to edge of board, U33 Pin 4, C180. Take your pick. Orange arrow: Red...

@codevonlux There is one very happy guy here! Board has been successfully repaired thanks to those awesome schematics! Currently running some stress tests on it, then need to do some final repairs once more caps arrive... Then maybe some shopping for upgrades... ;) THANKS AGAIN!

@codevonlux :) That is absolutely more than I could have hoped to get!! I definitely should be able to get this board working now! THANK YOU!

2nd set of vias are here: I'm specifically worried about the cyan arrow, which doesn't beep top to bottom. (I've gouged it nicely with my probes) C149 seems to match nicely with Bomarc's C5, which seems to indicate Blue arrow should be connected to ground... Unfortunately, there is no...

Long time lurker; first post. Attempting to repair a bunch of bad vias on a LC475 / Quadra 605 motherboard and running into some problems because I don't have a good board to check against or any decent wiring diagrams... Board was owned by another person and they attempted a recap. I bought the...