I'm selling a Quicksilver 2002 dual 1ghz Power Mac G4, for parts or repair on ebay. Anyone interested check it out here http://cgi.ebay.com/PowerMac-G4-Quicksilver-dual-1ghz-/120748051990?pt=Apple_Desktops&hash=item1c1d250e16
Most likely a PSU issue is causing the problem, very easily fixed...