boooooo, they listed it wrong. This is not the original NES.

Yes, the front loaders with the door do have trouble, but it's such an easy fix it's easier than changing the oil.

All the circurty for the NES is right under where you plug in the game, the game goes in the front but the connector is actually all the way in the back. So they have to have that connector make a U turn so that it connects to the board and the game at the same time. That U connector is where all the problems are. People blow in there and get it all covered with salavia.... that's one of the worst things to do cause it rusts.

All you need to do is open the NES, get to that connector and take it off. Then you can either replace it (ebay for <$10) or just clean it with some rubbing alchol, put it all back. works like new