It sounds like you simply had one of the faulty docking connectors that was not crimped properly. This is most likely the entire reason for the static in the first place.

This was a known problem with a certain run of the docking connectors, and it was a support issue. Many replacement wiring looms have been sent to people who requested it. If your player is still under warranty, you are still eligible to receive a replacement wiring loom free of charge. I suggest you contact support and take advantage of this if you can.