< Mac Useful Tips

How to Fix Mac Sound not Working and Adjust Mac Sound Properly

Mar 3.2020 - by MacBooster Team


MacOS Catalina 10.15.4 Beta 2 adds support for Real-Time Lyrics in Apple Music App. Lyrics in ‌Apple Music‌ for Mac can be accessed by playing a song and then clicking on the little speech bubble that's located at the top right of the app. Now you can sing along with lyrics showing on while playing the Apple Music. But it can be frustrating if your Mac got problems when playing the music. Mac has no sound, can't turn up or turn down the sound, or multiple sounds going on at the same time... So what to do if these issues come up? Here are some tips.


Check the Volume 


The first thing you need to do when you found your Mac has no sound is to check the volume, in case you muted the sound accidentally. Here's how to check it.


1. Play some music to check if there is definitely no sound coming from your Mac.

2. Then press and hold the F12 button to increase the volume. (There should be an overlay appear on your screen)


3. Use the slider in the menu bar to adjust it if the F12 doesn't work.

Check Audio devices


You need to check the audio devices if there is still no sound after plugging in headphones, microphones, or any other external device. Here are the steps to check it.


1. Plugin the headphones or headphones. (disconnect to the blue tooth if you have blue tooth connected)

2. Open Apple Menu.

3. Launch System Preference and select Sound.

4. Then choose Input to make sure you have the correct input device for your audio selected.

5. Then choose output and click on Internal Speakers to make sure that the Output Volume slider is moved to the right.


Further Method to Fix Mac no Sound


If you still have no sound on your Mac after doing the above steps. There are some further methods to fix Mac with no sound.


1. Update your Mac OS to the latest version: With the release of macOS Catalina, every audio unit plug-in must be "notarized" by Apple's security system. Because hardware and software often work together better on new versions of macOS, so updating to the latest version is a fix prerequisite for sound issues.


2. Turn the Mac off and on again (sometimes restart fix everything).


3. Restart sound controller: If the sound stops working or becomes distorted (crackling or noisy), then restarting the CoreAudio process should solve your problem. This is an effective way to resets the sound on your Mac, and you can quit the processes in two ways.



4. Use MacBooster to optimize Mac: low memory or low disk space can cause sound issues too. Clean up system junk and Optimize Mac to the peak performance is necessary. MacBooster is specialized in cleaning up junk files for your mac safely, securing your Mac from any threats and boosting mac to the peak performance.



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