Instructions
Make sure you are using a licensed Nintendo AC adapter and AV cable and that all cables are undamaged. Unlicensed products may not function correctly.
Firmly plug the AC adapter into the back of the console and into the outlet. Insert the AV cables with a slight twisting motion to fully seat the connectors, and make sure the video and audio cables are each plugged into the corresponding inputs on your TV.
Switch the TV and RF Modulator to a different channel if you are using a RF hookup, and ensure it is the same channel (either 3 or 4). Disconnect the TV aerial from the RF switch, and adjust the tuning on your TV to clear up the signal.
Press firmly on the game cartridge to make sure it is locked in place. Remove all accessories if you are having problems with a particular game, as the game and accessory may be incompatible.