I just recently got an NES.  The weird thing ism that to get games to work I have to push them down, and the make it so it comes back up again and play the games in the up position.  Would that indicate that it needs a new 72pin connector?  or something else?

Hi haveing changed a lot of pin conectors it is one of two faults first the pinconector has had its pins  bent back a bit to far when its been cleaned /reconditioned. or its just not siting on the board  neatly if its the first it will bend back into corect position but wont last  that long as pins will be weakend .new pins are oftern tight at first.
                                                  steve