The 30-pin dock connector (Lighting 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 flat-head 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.