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How do I connect my new (purchased last week) macbook air to my samsung smart tv? I purchased the adapter at the apple store and connected to the TV via HDMI cable.  The TV says "no signal.  I do not see TV as an option in the display tab of system prefer

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how do I connect my new (purchased last week) macbook air to my samsung smart tv? I purchased the adapter at the apple store and connected to the TV via HDMI cable.  The TV says "no signal.  I do not see TV as an option in the display tab of system preferences.  what else do I need to do?
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The best answer: First, make sure your TV is tuned to display the correct input signal. Most TVs have several inputs (multiple HDMIs, cable connections, RCA etc) so double-check that you're using the correct one - HDMI1, HDMI2 or whatever is written next to the port.
I assume that you have a mini-Displayport to HDMI adaptor? If you open displays preferences, first tick the box that says "show display preferences in menu bar" then locate the menu and click Detect Displays. See if that helps.
Matt

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