My MacBook Air has no output sound
my MacBook Air has no output sound, I have tried resetting the PRam, SMC and updating os, when I done a diagnostics on it error code VFF001
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Try holding down the option (alt) key and clicking the speaker icon in the top bar. Then click by output device the Internal Speaker.
I can't promise it works but it's worth trying.
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Same mbp, same error code VFF001. Also SMC reset did not fix.
Note however, I still have audio on the HDMI, like when connected to a TV. And I can use air-play, and possibly blue-tooth devices, like headphones/speakers. So these may be a work-around if not worth it to fix the mbp.
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If it’s a MacBook Air, the Cirrus Audio chip is located on the IO board. Replacing the IO board resolves the VFF001 alert in most instances. If it’s a MacBook Pro, inspect the area where the Cirrus Audio IC is located - it’s not as easily replaced as it is on the Air.
The VFF001 alert doesn’t appear when the headphone port is dirty / obstructed, it usually only appears when there is chip/component/trace damage affecting the audio circuit.
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Sound fine on headphones and over Bluetooth to remote speaker (JBL Flip) but not from 2015 MB Pro. Can adjust sound volume from computer. Just no sound from computer speakers
Try going into Settings to unclick the mute button. If that doesn't work, try using the software to Restart. If that doesn't work, try doing a manual Restart to get into Settings. When I upgraded my MacBook Air with the latest OS, it dropped the 123 password & went back to the original owner password, so I can't get past the login :-/.
из Loy Lum