hey drew, good call opening it up. tbh, almost all of them are ticking time bombs, especially the earlier versions (1.0-1.4). it's usually the aerogel or nichicon ones that fail and leak that brownish goo.
* just look for any cap with bulging or liquid around its base.
* even if it looks fine, it's safer to just snip it out. it's not needed after the console is softmodded/hardmodded anyway.
* if you have a 1.6 model, those caps are usually okay, but still good to check.