How can I replace a broken joystick on a non-detachable Odyssey² console?
Contrary to appearances, non-detachable Odyssey² joysticks aren’t actually hardwired; it’s just that the joystick port is inside the console. Internally, the joysticks connect via a molex-type connector. To replace a joystick, it is necessary to open the console by removing the three hexagonal screws on the console’s base. The only tool you’ll need is a 1/4″ socket wrench to remove the screws. Then it is a simple matter to unplug the broken joystick and replace it with a functioning unit. Of course, if you have basic electronics skills, you might want to rewire your Odyssey² to accept standard (Atari 2600-compatible) joysticks. For details, see answer to the following question.