Hard to say but there is a possibility it is the jack soldering (or something similar) - see last post on here: http://forums.techguy.org/hardware/... Try wiggling the connection and see if that affects the lights.
Having said that even new items can be defective.
Always pop back and let us know the outcome - thanks
The information on Computing.Net is the opinions of its users. Such
opinions may not be accurate and they are to be used at your own risk.
Computing.Net cannot verify the validity of the statements made on this
site. Computing.Net and Compnet Ventures, LLC hereby disclaim all responsibility
and liability for the content of Computing.Net and its accuracy.