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I was looking at a thread posted on earlier Laptop charger dying after plugging in? talking about a power issue with a laptop or the charger. I have done some testing and concluded that the short is not in my battery or the charger.

One of the posts had mentioned looking for the short internally on the motherboard or power connector. I am in need of information on the tools required and the process of the procedure so i can track down the busted part.

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You have not indicated why you think there's a "short" somewhere. Please do not misuse the term "short" if you just really mean "an electrical problem". I've heard/read too many people describe a problem as an "electrical short" when they wouldn't know the difference between a short versus an open. –  sawdust Dec 4 '11 at 1:12
    
You are correct, I do not know weather or not there is a short, just felt like the best term to use, all i know is that there is an electrical problem either with the power connector or with something onn the mother board and need to find the issue –  Dale Dec 4 '11 at 1:21
    
The origional problem consisted in the led on my power brick being on but when i plugged the charger into my laptop it immediately turns off. Tested the cord and its fine and tried to run the laptop with the battery out but still plugged in and that didnt work. This leads me to believe that there is an "electrical problem" internally with the laptop, i need to be able to find it in order to replace the part –  Dale Dec 4 '11 at 1:23

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I wouldn't say your power supply / charger is in the clear until you've tested it under load, say with a laptop model similar to yours that it is compatible with. It might look fine with a multimeter but croak under load. Trying another known good power supply if you can would also help confirm whether yours is good or not.

If you're up for taking your laptop apart, you could dismantle it enough to access the connection of the power jack to the motherboard and see if it looks good visually and probe it with a multimeter. You'd be looking for DC voltage / amperage within the spec range for the supply (should be printed on the power supply somewhere). Beyond that, I think it gets tricky and you'll need a fairly extensive electronics background. Maybe you'll get lucky and you'll find a broken trace which you can repair with a lead pencil or trace repair pen, but if the fault is in a component somewhere, even if you were to find it, removing and resoldering surface mount components takes specialized tools and a skilled set of hands to operate them.

Also, it sounds crazy, but check this out. Maybe try updating your BIOS?

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Thanks, if I were to probe the motherboard with a multimeter, what reading would i expect back for working and non working parts. –  Dale Dec 4 '11 at 1:33
    
I would try updating my BIOS except I cant turn the laptop on –  Dale Dec 4 '11 at 2:21
    
+1 for not assuming that the PSU is okay. The external PSU for my Ethernet switch had good/full voltage with no load, but when connected to the switch the voltage dropped by half. –  sawdust Dec 4 '11 at 4:18

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