I know this is a very old thread. I like the old mac minis. People are finding ways to add value or life to them even 3 or 4 years out of most support by hack loading 10.8 and adding SSDs and extra caddies. According to a thread on MacRumors the 2006 and 2007's mac mini boards had some issues with capacitors in the area around the power board. The 2007 had two or three that tended to go bad after a few years. Here's the thread http://forums.macrumors.com/threads/2006-mac-mini-possible-fix-for-no-power-to-logic-board.1513809/