Hi guys,
I have this iMac with that fault, the integrated microphone is not detected, and also plugged an external one and same.
Tried the "pram" reset procedure several times without any change, no noise is detected.
I thought someone would connect a line jack on the past to the microphone jack and some protection diode was deployed, maybe a DZ6600 or similar.
The other audio capabilities are ok, only the mic is not detected.
On the BRD file and on the service manual there are some differences on the presence of some diodes (varistors?) and condensors on that line on the manual that are changed on the BRD file, that confused me, maybe different revisions on the board.
Checked for shorts or broken lines to the audio chip and seems all is ok on the mic lines to the pins on the audio chip.
Any one could point me to a correct way? Thanks!!
I have this iMac with that fault, the integrated microphone is not detected, and also plugged an external one and same.
Tried the "pram" reset procedure several times without any change, no noise is detected.
I thought someone would connect a line jack on the past to the microphone jack and some protection diode was deployed, maybe a DZ6600 or similar.
The other audio capabilities are ok, only the mic is not detected.
On the BRD file and on the service manual there are some differences on the presence of some diodes (varistors?) and condensors on that line on the manual that are changed on the BRD file, that confused me, maybe different revisions on the board.
Checked for shorts or broken lines to the audio chip and seems all is ok on the mic lines to the pins on the audio chip.
Any one could point me to a correct way? Thanks!!
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