Nintendo Family Computer (Famicom) Controller Motherboard Replacement

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The controller motherboard is a critical component responsible for translating button presses into readable inputs for the game system. All controller components, including the motherboard, are subject to accidents, gunk buildup, and wear and tear. The controller motherboard, often built durably and protected within a case, will typically outlive the buttons and wire connections. Nonetheless, controller motherboards do need replacement from time to time.

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crwdns2931653:01crwdne2931653:0 Controller Motherboard

Nintendo Family Computer (Famicom) Controller Motherboard Replacement, Controller Motherboard: crwdns2935265:01crwdnd2935265:01crwdnd2935265:02crwdne2935265:0

Nintendo Family Computer (Famicom) Controller Motherboard Replacement, Controller Motherboard: crwdns2935265:01crwdnd2935265:02crwdnd2935265:02crwdne2935265:0

Use a Phillips screwdriver to remove the six 13.5 mm screws that secure the lower case.
Remove the lower case.

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Nintendo Family Computer (Famicom) Controller Motherboard Replacement: crwdns2935265:02crwdnd2935265:01crwdnd2935265:02crwdne2935265:0

Nintendo Family Computer (Famicom) Controller Motherboard Replacement: crwdns2935265:02crwdnd2935265:02crwdnd2935265:02crwdne2935265:0

Carefully disconnect the faulty controller's connector from the motherboard port.
Pull only on the connector; do not pull on the wires. The connector can be quite strenuous to remove. A pry tool or pliers may be helpful to disconnect the connector.

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Nintendo Family Computer (Famicom) Controller Motherboard Replacement: crwdns2935265:03crwdnd2935265:01crwdnd2935265:02crwdne2935265:0

Nintendo Family Computer (Famicom) Controller Motherboard Replacement: crwdns2935265:03crwdnd2935265:02crwdnd2935265:02crwdne2935265:0

Use a Phillips screwdriver to remove the six 9.3 mm screws from the back side of the controller.
Remove the back cover of the controller.

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Nintendo Family Computer (Famicom) Controller Motherboard Replacement: crwdns2935265:04crwdnd2935265:01crwdnd2935265:02crwdne2935265:0

Nintendo Family Computer (Famicom) Controller Motherboard Replacement: crwdns2935265:04crwdnd2935265:02crwdnd2935265:02crwdne2935265:0

Remove the controller motherboard, noting its orientation.
The Player 1 and Player 2 controller motherboards are not identical and differ from one another.

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