Ok,I did find this before but thought it irrelevant but could have something to do with it but not 100% sure on that,,if I was you I would email who done repair and try find out what it came off,,very odd cause it got same numbers so you think it work.....one thing I did notice in your first post is the white dry residue around soildering ,carefully scrape that oxide stuff off cause some points it's bridges onto other copper points which could be causing bad or shorting contact then try power up again
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