rcolladoj, check the battery connector. Make sure it is still fully attached to the board. This model iPod has a tendency of breaking the battery connector of the board. Also make sure that your ribbon cable is properly seated. Whenever you check with another battery, make sure that the battery is working in another iPod. you would not want to check with a battery that is not working either. If all that is okay you do want to check the dock connector, make sure that it is clean and has no broken, bend or corroded pins.