Atari 2600 games-has a picture but character wont move Help!

Apparently there have been many reports of this. According to a few techs that I have talked to these games must be played at least once every two months or so or they will cease to function properly. I have been told that they are much like a rechargeable battery,and with use they will work...if not used...well...
I talked to another fella that claims to be a pro at Atari games...he says to roll up some paper and wedge it in between the game and console so it fits tightly.
Guess it wouldn't hurt to try huh?
I'll keep researching this in the meantime for you.