Nintendo NES / Famicom

The Nintendo Entertainment system is the first home console released in America by Nintendo. Games were released in cartridge format.

72-Pin Connector
The NES 72 Pin Connector is what connects the game cartridges to the mainboard. It is known to get very dirty as well as bent out of shape with regular use. This generally is fixable, but will eventually need to be done again. Below are images of the connector both before and after Ultrasonic cleaning with Branson EC. This alone allowed the connector to function again in this case.