Quote Originally Posted by Polygon View Post
That doesn't really solve any problem.

The answer is to clean the contacts properly. If your contacts on the game are clean and not corroded to shit and you're still having issues it's the connector in the NES. Try cleaning it first, next there are ways to try and repair the connector. If all else fails, get a new one.
Even with properly cleaned contacts, sometimes minor dust can prevent a reading, in which case canned air is a perfect solution.