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Title: Hyper Olympic bootleg #1 repair log Post by: Zabanitu on January 14, 2012, 10:59:03 AM board displayed all OOOOOO on screen.
replaced the cpu 40 pin socket, found a flaky output @8F (LS00) and replaced it, board runs but sprites have sparkles on borders: replaced LS74 @4G (found by just touching its legs). hi score battery replaced (3.6V 50mAh NiCd). Sound is ok |