Projectors once were limited to use in movie theaters and homes through 8mm film. But through the invention and affordability of digital projectors, consumers now can use them for several applications, from overhead tutorials in the classroom to watching television and movies at home. If your old TV is a little small for your large audience, using a projector can expand the picture for everyone.
Review your television's output capabilities. Older models had no outgoing video connections. To hook up a projector, you had to connect it to the cable box or a DVD player. Newer televisions have a series of color-coded audio/visual plugs labeled "Video Out," or they may have a single cable labeled "S-Video." These plugs resemble a headphone jack and are color-coded red, yellow and white.
The projector should have a series of audio/video or S-Video plugs labeled "Video In." The plugs resemble a set of headphone jacks and are color-coded red, yellow and white.
Connect a coaxial cable to the back of your television. Attach the cable to the cable box. The cable box will have a set of audio/video plugs or S-Video plugs labeled "Video Out." Connect a set of audio/video or S-Video cables into the correct plugs of the cable box. Connect the other ends of the plugs to the projector jacks labeled "Video In."
The same process applies to newer model televisions.