Connecting a TV and computer screen is a simple process of taking an A/V cable and passing the graphics and audio from the computer to display it on the TV. Doing the same thing without wires becomes a much more complicated task. Transmitting high-quality image and sound wirelessly requires particular conversions to keep the information intact and pristine. By using some special hardware, you can easily connect your iMac to your TV and start watching movies in no time.
Connect the wireless converter's VGA cable to your iMac's VGA port. Plug the converter's end of the VGA cable into the VGA port on the back of the transmitter.
Plug the audio cable into the headphone jack on your iMac and connect the colour-coded A/V cables at the other into the coloured jacks on the back of the transmitter.
Insert the power supply plug into the transmitter and connect the other end into a nearby power supply. Try to use the closest socket possible to avoid trailing wires.
Start your iMac and turn on the program that you want to watch on the TV.
Change the input channel on your TV from the remote until you see the picture from the iMac. Depending on your TV, the channel might be called "Auxiliary," "Video Input 1" or "Composite."
You can use most wireless converter transmitters up to 150 feet away from the TV.
Do not purchase a converter without making sure that it is Mac-compatible or you will not be able to transmit any picture to your TV.