For any runner that plays on the Original XBox, you NEED to remove your clock capacitor (if your model has it).

Taken from ChrisderWahre on the JSRF forums (thank you Chris): It's a capacitor that is famous for leaking on the XBox Revisions 1.0-1.5 (the cc of 1.6 can't be removed and doesn't leak, tho 1.6 sucks because of video encoder)

Identify your xbox revision: http://www.informit.com/articles/article.aspx?p=367210&seqNum=2 if its a 1.0-1.5 it has to be removed, because it can and WILL leak.

What does happend when it leak? The capacitor leaks ACID that kills the board, and you can basically throw it in the trash because it can't be repaired.

A good guide to remove the clock capacitor:

Cheers, Chris.