I mean to claen the contacts on my NES, TG-16, Genesis, etc games. I have read different ways: 70% isopropyl alcohol (with a Q-tip), 91% isopropyl alcohol, a 50/50 mix of isopropyl alcohol and water, pencil erasers, etc. My NES games says right on them NOT to use alcohol.
So what gives? How should I clean them? Some of the ones I buy from flea markets and auctions are quite dirty?
Thanks!!!!!!!