Loose Power Connection

I've read dozens of solutions to this problem which all blame the internal power jack as the problem, but when I take the power cord from my docking station and plug it directly into the notebook, I have a good connection, and the power cord I was using directly in the notebook doesn't make a good connection with the docking station. Hence, it appears that plug on the power cord is worn down. Any solutions for this problem? It's an HP Pavillion dv6700 if it makes a difference. Thanks.

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