Nes power light oes on and off

This is possible a problem with your A/V cords. Try "jiggling" them around when you have the NES turned on, and if there is no picture or sound after that, you may need a new set of the cables.

The NES is touchy like that, sadly-- your problem isn't uncommon. My NES, and the NES of nearly every friend I have who still owns one, plays this little trick on them from time to time. Here's what we do:

1. Turn off the NES console.
2. Blow into bottom of the game, near the chip that connects to the NES.
3. Wipe away any excess dust from the game itself.
4. Blow into the console of the NES.
5. Wipe away any excess dust.
6. Re-insert the game and try again.

If this doesn't work, try placing the game in more delicately, or with more force. It's just a matter of trial and error, and sometimes it will work faster than others. Hope this helped!

Well I think that the lockout chip might be causing the issue and there are web sites that show and tell you on how to do lockout chip removal for NES.

72 pin game cart adaptor needs replacing. they can be purchased for around £10 and make it work like nes

well, heres what you do.. turn it off, and eject the cartridge.. blow in the bottom where the chip is to get rid of any dust, and put it back in.. turn it on.. if it still blinks, turn it off, and eject the game again.. this time blow into the nes itself.. put the game back in, and turn it on.. if its STILL blinking, grab another cartridge, and TURN OFF THE NES its very important. press down on the game you want to play, like your going to eject it, but instead of letting it up, slide that second cartridge you grabbed in on top of the first one.. turn the nes on, and enjoy...

it SHOULD work... if not, try taking a q-tip and dipping it in hydrogen peroxide, and cleaning the nes and game.

HAVE FUN

You need to clean the NES cartridge best use cutips with rubbing alcohol

Have you tried pulling out the cartridge and blowing any dust off the game?

It's kinda weird but I don't put the cartridge's in all the way and sometimes that fixes the problem! Hope this helps! =)

Sorry to say but if this is happening with all the games then there is a fault with your console. May be just as bad or dirty contact in the cartridge slot. So you may want to open it up to have a look and clean it out. But there's a big change you didn't get your money's worth.