I also went to see a Genius at the Apple Store - they did their tests and said "there's only two options: an isopropyl alcohol swabbed q-tip cotton swab.tried disconnecting battery then rebooting.
I downloaded and booted the ASD software EFI and OS diagnostics - no errors.looking in the hole with microscope & 1.8mm led to illuminate - can't see anything obstructions in the hole.tried logging in via a new user account.tried PRAM/NVRAM resets (I don't hear the "chime" sound).disk utility and run disk repair (no errors).repeatedly plugging & unplugging different types audio equipment to the headphones port (including apple headphones).I've tried all of the following in the listed order but nothing's changed: I've hunted and hunted all over the internet trying all various suggestions that others have had success with - I've tried all of the following, but still no luck: In "system information", when I look in sound hardware.so it's not the optical speaker switch problem most people seem to have. NO RED LIGHT coming from headphone jack.checked System Preferences->Sound settings: nothing showing up under the Output or Input tabs (no "Internal Speakers" showing up).I see the volume no-access icon (circle with diagonal line through it) when trying to change volume.No sound coming from output jack (headphones or external speakers).
Built-in speakers don't make any sounds.just like I did everyday before that, but for some reason this time I didn't get any sound output and the volume feedback was delayed when I tried to turn the volume up/down. It has *not* experienced any water damage or drops, but I'm pretty sure this problem started when I plugged in my external power speakers' amp to the headphone jack. I am really stumped by this problem, and I'm really hoping you guys can help as I'm pretty sure it's a hardware issue.īasically, I get no audio from my MacBook Pro Retina 13" Late 2013 A1502 16Gb 2.6GHz - everything else works beautifully as ever with this machine (incl USB & power) apart from the sound.
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