I have a Shuttle SV25 computer (one of those little cube ones), and I think the power supply is about to go. (Never quiet, it now makes alarmingly loud buzzes and clatters, especially when starting up.) Where can I buy a replacement PSU? It's a teeny thing, 150 watts, much smaller than a regular SFX, and it's in the front of the cube, with a cable connecting to the socket on the back. The Shuttle website is of exactly no help. PC Power and Cooling doesn't carry them. I have an email into Power-On.com. Any other ideas? Has anyone had a similar problem?