| Well, i can do the networking side but have never took one apart...
think there are 3 torx screws on the underside which should split it, might be worth a chat to Derek on upnorth, he's the electrical wiz and also uses a mac.
have you checked its not the power supply before opening it up??
there are a few different versions of the base station and knowing Apple each will have its own way of opening. | 
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