ALRIGHT so I've been testing out a lot of used NES carts with dirty connectors on my NES. Ya I know, kind of stupid not to clean the carts first. Anyway, my NES was a typical NES before this problem started. Most games take a bit of wiggling, moving around in the cart slot to get to work etc.

So now with every game I'm getting the same weird problem, so I know it's the system and not just dirty carts. I took apart the NES to get to the 72 pin connector and look at it. Looks ok.

So have any of you ever seen this particular problem? I took a video.

http://www.youtube.com/watch?v=xNCAn2PUanI

Any opinions or advice is appreciated.