They're almost impossible to repair - i know, I've tried.
Whether it's a valid warranty claim depends on whether it was supplied like this, or whether you did it (be honest now!! ;-))
At least one of the pins is sometimes missing (centre of the bottom row) - this is for use with some data cables which have a blanked hoe in the connector. This pin is not use (of course) - so it may not matter of this is the pin you are talking about.