Hi. I just received an NES I bought from eBay, and am disappointed to find that almost none of my games work. It claimed to have a new 72 pin connector. Out of my 19 games, only 5 worked. The system came with a game which did work, which makes me wonder whether or not the system or my games are to blame. Oddly, all 6 of the working games are the ones that are missing a couple pins on the chip coming out the bottom. I cleaned all the non-working games with alcohol and a Q-tip. Any help would be greatly appreciated. Thanks in advance.