First off, are you using an RF adapter or composite cables? If you are using the RF adapter, ensure it's connected to the cable port on your TV and that it's set to channel 3. If channel 3 doesn't work, then use channel 4 (Channel 4 generally doesn't work ever, because most TV's now have digital tuners and can decode the channel 3 signal properly. It still doesn't hurt to try, so humor me.). Next, check to make sure the red light on the console deck is on when you switch the power on. If it's not on, obviously, it's not getting power. So you need to check that you AC adapter is plugged in properly (on both ends) and is working. If you can't get it power, try getting a new AC adapter, and if that doesn't work, then a new console. If it's getting power, it's a video signal issue. So let's check the game. Sometimes if a game doesn't make a clean enough connection, the TV won't flicker because the console did recognize the game as legit and it is actually running the game. So let's make sure the game contacts are clean. I'm going to assume you did it already "Nintendo Style" and just blew into the cartridge, so get some isopropyl (rubbing) alcohol and a couple q-tips and clean the contacts. Still doesn't work? Let's go back to the video cables. RF adapters like to break and be stupid all the time, so get some composite cables. The same cables on the N64 (RF adapter included) work with the GameCube and Super Nintendo, so if you have either of those then use those cables until you can get some replacements (or test that the cables are indeed the issue). If you get new cables and still don't have a picture, then you need to replace the console. Generally, these steps will resolve your issue, as I have this problem all the time and all I have to do is clean the game and it shows up. My RF adapter sucks too, so that's probably half of the problem. Either way, those steps should resolve your problem, happy gaming!