The Built-In Mic on the iMac Is Not Working

By Steve Gregory

Your iMac computer has a built-in microphone that you can use with applicable software programs to have online voice and video chats. The internal mic is located at the top of the computer's monitor. Normally, the microphone is automatically enabled in Mac OS X. If the mic is not working, there are some steps that you can take to fix the problem using the settings in Mac OS X and the applications that you want to use the mic with.

Modify System Settings

Step 1

Click the "System Preferences" icon from the dock on your iMac's desktop to open the System Preferences window.

Step 2

Click the "Sound" icon in the "Hardware" section.

Step 3

Select the "Input" tab, then click "Internal Microphone" in the "Select a Device for Sound Input" box.

Step 4

Click the "Input Volume" slider in the "Settings for the Selected Device" section and drag it to the right.

Modify Application Settings

Step 1

Launch the application that you want to use the built-in mic with. FaceTime, Skype and iChat are examples of such applications.

Step 2

Access the application's "Preferences" or "Video" menu. The typical process is to click the name of the application on the main menu bar of the desktop and select "Preferences." If applicable, select the "Video" menu from the main menu bar.

Step 3

Select the "Audio" or "Audio/Video" button, then choose the built-in microphone from the list.