Power cord not lighting up!

So usually when I plug the power cord into my macbook pro, the light does not come on. At first, I figured it was a problem with the cord because it was old (both computer and cord purchased in 2005) and because when I messed around with the connection on the "brick" and moved it around, it would work.
Now, I bought another power cord, and it is doing the same thing. I can still get a good connection, but it sometimes takes a good 5-10 minutes of screwing with the power cord. Help!?

Does the new mag safe have an "L" shaped end instead of a "T" shaped end? I have heard that there have been some problems getting them to work properly with original MBP's.
http://support.apple.com/kb/TS3499
Not sure which Mac you have or if it might need the update for the charger to work. Best thing would be to do as Baby Boomer suggests, take both adaptors and your Mac in for evaluation.
Good luck!

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