GameCube Controller

The Gamecube controller can often take a lot of stress on the motherboard. It's not uncommon to find the motherboard to be cracked inside. Be careful when taking apart the controller and inspect the frontside of the motherboard for cracks. Usually it cracks between the Start and B buttons. If the motherboard is cracked, it can break VERY easily under minimal force. (Don't ask me how I know)

You can easily test gamecube controller buttons with this Wii Homebrew software https://wiibrew.org/wiki/Visual_Controller_Test Pinout/Motherboard scans https://simplecontrollers.bigcartel.com/sammy-controller-protocol https://imgur.com/gallery/F9DRE