power cable issues, no light, unless unplug, etc

Hello All-

 

I have a macbook pro with the "L" style magsafe connector. I am running 10.7.5 OS with a 2.4 GHz Intel Core i5 processor. I am up to date with all software updates. The chord and computer connections are clean, intact and unobstructed.

 

I've noticed that my power cord light will be off (and not charging the computer) and if i unplug it from the computer and replug it in, i get nothing. If i unplug from the wall and plug back into the same outlet, then you get nothing. if you unplug from the outlet and plug into a different outlet then the cord illuminates and starts charging the computer. doesn't matter if the outlets are in my kitchen, at work, etc. same phenomenom. i wonder if it has something to do with heat from plug assembly. By that once it heats up, then you get a bad connection, and plugging it into an unused outlet will work.

 

Anyone else had this issue? it's a pain to be crunching large datasets and come back to the computer drained of power and off because the cord is no longer giving power.

 

Thanks in advance-

Todd

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