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Go to System Preferences > Click on Display.Click on the Apple Icon on the Top Left of the Screen.If this is turned off, your SmartTV display will not be visible even after launching the Airplay app. To turn on the TV feature in the Macbook follow the below steps: To extend or mirror your MacBook screen you will need to turn on the TV feature. A four-digit code will be displayed on the screen, type that on the Macbook and done.Then on your Macbook click on the Control Center icon located on the top right of the screen in line with WiFi and Clock.
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