macRumors ref: Não há som fora dos falantes do MacBook & LED vermelho no conector de fone de ouvido .
A luz vermelha provavelmente é porque é uma porta Mini-TOSLINK .
There is a metal prong in the jack and sometimes it can be bent,
causing the digital audio to be turned on when it shouldn't be.
.
The problem is there is a switch in the jack that tells it if you have a mini headphone plug or an optical plug plugged into the headphone port. The problem is when you remove the plug, the jack doesn't know it and keeps shining the red light to talk with the optical. This disables the internal speakers and you see digital out instead of internal speakers in the speaker conrtol panel. Plugging and unplugging the speakers may get it working right for awhile but it won't last forever.
E, para os corajosos,
I slid a paperclip in, and pushed out a little metal on the side.
That did the job, and I have internal sound again. And the digital red light, is now off.
Atualização importante :
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