I have a Super Nes since maybe 15 years. It used to work perfectly. I didn't play it since maybe one or two years, and recently I tried to play it again.

But here's the problem: some games will play perfectly, others will play but some graphics will be all messed up or the music will be messed up, and others just don't play at all.

I was wondering what could be wrong??? I tried to clean the games and the console with Q-tips and rubbing alcohol but it doesn't fix anything.

Video Game Consoles & Games - Nintendo - Super NES Console