Bring old and new together by hooking a Nintendo Entertainment System (NES) up to your flat-panel TV. Modern TVs still accommodate the original NES system, but the NES doesn't support any of the new visual technologies such as high-definition output. With the proper instruction, you can connect your Nintendo game system to your TV in minutes.
Plug the power cord of the NES into a nearby wall outlet and plug the other end of the cord into the back of the NES. The two ports in the back of the NES are for the power cord and the RF cable. The power cord goes into the port closest to the middle of the console.
Place the head of the RF cord over the threaded connection port of the flat-panel TV, twist the head clock wise to tighten the connector into place. Plug the other end of the RF cord into the remaining port on the back of the NES.
Switch the NES to channel 3 or 4. This determines the channel the TV must be turned to for it to display the NES. Plug the antenna into the end of the NES' RF adapter. The antenna signal goes through the RF adapter into the TV and you can still receive your channels when the NES is not turned on if you are not using an HDMI cable to receive a high-definition signal.
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Turn on the NES. Press the "Source" or "Input" button on your television or remote if you do not see the screen for the NES. Continue to push the button until you see the NES screen or select "Cable" or "Antenna" if a menu pops up on the screen.