re: How did we all know to fix NES cartridges as kids in the 80s/90s?

My dad saw me blowing in a game once, and asked me what I was doing. I told him getting the game to work. He told me all I was doing was covering the connectors in spit. He told me if the game wasn't working to put rubbing alcohol on a quetip and rub the cartridge and the connector in the nintendo. It worked everytime.

I slept at a friends house and we got the grey screen I told him about the alcohol thing, and he told me that was stupid.