Sega genesis 3 controller is not working?

If your Sega Genesis 3 controller is not working, first check the connection to ensure it is securely plugged into the console. Inspect the cable for any visible damage, and try using a different controller to confirm the issue isn't with the console itself. Cleaning the controller's connectors and buttons may help if dirt or debris is causing problems. If the controller still doesn’t work, it may need repairs or replacement.