Buzzing sound first 30s after speakers turn on. DAC speaker output
The other day in the shop I got a macbook pro (non-unibody) with an odd problem. Every time the speakers are toggled by a sound, the speakers give a sort of humming high-pitched for the first 30 seconds.
Googling around a bit gave me the idea this has to do with the settings for the DAC output buffer, where the output only powers down x seconds after the sound was used. I have no clue however how to alter this from 30 seconds to for example 1 second.
Does anyone know how to do this or how to fix it by replacing some hardware or reseating something? The sound is present both with internal speakers and headphones.
Es esta una buena pregunta?