In this video I'm repairing the AC power port on a Toshiba Satillite L-455 laptop. I remove the harddrive, ram, dvd drive, keyboard and of course the battery so that I can crack the laptop open to gain access to the ac port. Here's a link to a really good trouble shooting guide - http://pcsupport.about.com/od/findbysymptom/ht/pconthenoff.htm
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https://www.youtube.com/watch?v=CE9gyP9JacU