How to send a television signal to a projector
Home projectors are used to enlarge the image of your computer, DVD player or TV. If you have a TV and the size of the image is not as large as you would like, you can connect the device to the projector. This sends a signal from the TV to the projector, which allows you to see the image of your television signal on a larger surface, such as a projection screen or a light colored wall.
Connect the yellow RCA cable to the “Out” port on the back of the TV. In general, televisions are not designed to send the output image signal, so connection options are limited. Often, the yellow RCA output port is the only connection you can use with the TV.
Connect the other end of the yellow RCA cable to the “In” port of the projector. The port is located on one of the sides or on the back of the projector.
Turn on your TV and set it on the channel or station you want to watch with the projector. This can also be a video input, such as a DVD player or a game console.
Turn on the projector and press the menu option. Choose the video entry option and select the “RCA” entry option. Wait for the projector to change to the appropriate connector, and in a moment you can see the TV image on the projection screen.