Quote Originally Posted by Oldskool View Post
That's interesting, it's almost like the clean cartridges cleaned the NES itself. Does this NES have a new 72 pin connector installed? I've only heard of them playing games in the "up" position with NES's that have a new 72 pin.
It was quite a while, like 8 years back, but no, that was the systems original 72 pin connector. I never specifically tried to clean it, but what I think happened, is that indeed, the cartridges transferred some of the deoxit to the 72 pin connector, where the repeated insertions and removals allowed the deoxit to do its thing.