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.
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. Open the video in QuickTime Player and check if the codecs are supported by iMovie.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. Or the video is recorded by the camera in a format that iMovie doesn't like. This can happen because a specific audio file is rendered in an unsupported codec in the creation or import process. If there is no audio wave form in iMovie after you import the video from your Mac, it means the sound is not imported into iMovie at all. Check if the audio/video formats are supported You will need to get the non-DRM audio for iMovie or remove the DRM (legally). Even if you download the Apple Music to the local music library on the Mac won't remove the DRM protection. For example, when you drag an audio track from Apple Music to the iMovie project, it won't play the audio. If the video contains copyright-protected audio (or video), there will be no audio when importing to iMovie. IMovie doesn't support audio which is DRM protected. Fixes to iMovie Audio Not Playing Issues 1.
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