The 30-pin dock connector on the iPod Touch is Apple’s proprietary means of charging and syncing these devices. After a while, due to rough handling of the device and cable, pressing too hard when plugging it in, or dropping the device while charging/syncing, some of those pins may become bent, broken or unusable. If this happens, your iPod Touch may not sync or charge properly. Bringing it to Apple for repairs can be a little pricey, especially if your device is out of warranty. With the right equipment and a steady hand, you can fix a bent or broken pin yourself and save a little money.
Place your iPod Touch face down on a flat surface with the dock connector facing you.
Look for any bent or misshapen pins and gently bend them back into place with a flathead screwdriver. Use the other pins on the connector as a reference. Be careful not to press too hard and break off the pin.
Use a soldering iron for pins that have broken off completely. A very small amount of solder is needed to reattach the pin. Be sure to let your iPod sit for a few hours while the solder sets.
In the event that your dock connector is beyond repair, you may need to send it to Apple for a full repair. However, you can buy a dock connector for the second- and third-generation iPod Touch through third-party vendors. Installing it will require you taking apart your iPod, screen and battery (an arduous task) and putting it back together. You can buy a dock connector from a third-party vendor as well as a full step-by-step tear-down.
Before attempting to repair the iPod Touch on your own, check and see if it is still under warranty or if you purchased AppleCare. Under warranty, an Apple Store may be able to repair the damage cheaply or free of charge. Repairing the iPod yourself will void any warranty.