LCD screen is buzzing after tighten loose screws at both clutch hingesHi I replaced lower case in my MBP A1211 and decided to tighten the loose clutch hinges. After assembling everything works...
回答“No audio, and no "Internal Speakers" in SystemPrefs>Sound>Output”I had similar problem with my MBP A1211. While reconnecting speakers to I/O board didn't helped I tried reconnecting I/O board to logic board. Sound is back.