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Speaker and charging not working after heatsink replacement

Hello. When I tried to reinstall the IO board, I noticed that the sounds weren’t detected. The microphone too. The connectors were installed. Then when i plug the magsafe charger, power source is power adapter, but not charging. The USB port doesn’t detect any flashdrives.

Also, the camera wasn’t working. in photo booth, the green light was blinking. the rest wasn’t detected like the speaker, mic, usb ports, but the magsafe charger when plugged, tho wasn’t charging, system says the power source is the power adapter. how come?

What may seem to be the problem and how can I fix it? Thank you. I’m on my last 80% battery life. Please help.

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It sounds like you have a messed up I/O cable or the I/O board its self is damaged.

This series has the audio DAC chip on the I/O board so when you stated the microphone as well as the speakers/headphones are not working thats telling me the DAC is not getting power via the main logic board and as your USB port is also not working its not connected to the main board either.

Pop off the I/O cable and carefully inspect the contacts on it and on the I/O board as well as the main logic board.

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