Mac HDMI to TV
If your Macintosh computer or laptop has an HDMI port, it can connect directly to an HDTV set with a single cable connection for video and audio, depending on the equipment installed in the Mac and how it is programmed. Even if the TV does not have an HDMI port, you can make the connection using external devices.
Direct HDMI Connection
If your TV has an HDMI port, you can connect your HDMI Mac directly to it with a cable from the port on the Mac to the port on the TV. For a Mac with a Mini DisplayPort, use a Mini DisplayPort-to-HDMI adapter. Depending on the model and year of manufacture, some Macs do not support the audio-out function to the TV.
Composite Video Connection
If you want to connect your HDMI Mac to a TV that has only a composite video input, use an HDMI-to-composite video converter. Connect the Mac to the input of the converter with an HDMI cable and the output to the TV with an RCA composite video cable with RCA connectors. Use the yellow plug from the video-out jack on the converter to the video-in jack on the TV. Use the red plug for the right audio and the white for the left. A converter for composite video usually costs less than other converters.
If your want to connect your HDMI Mac to a TV that has a component video input, use an HDMI-to-component video converter. Connect the Mac to the input and the output to the TV with an RCA component video cable using the green plug for the Y signal, the red for the Cr and the blue for the Cb. Connect the audio with an RCA audio cable. A component video converter may also have outputs of composite video, S-video and VGA.
To connect your HDMI Mac to an older TV without any external video input jacks, use a composite video converter to convert from HDMI, then connect it to a VCR with an RF output for either channel 3 or 4. Connect the VCR RF out to the antenna input with a coaxial cable with F connectors. You may need to insert a videocassette into the VCR and set it up to record to get a picture on the screen.