When I have the Mac plugged in the light stays on perminantley and when I do press the power button the fan starts to spin up then stops also there is a red light on the motherboard but no video output.
Powermac G5-OTHER, Mac OS X (10.6.8)
How to reset the SMU/PMU on a Power Mac earlier G3, G4, G5 models...
http://support.apple.com/kb/HT1939
http://www.macusersguide.com/2009/05/resetting-pram-nvram-pmu/
http://www.everymac.com/systems/apple/powermac_g5/specs/powermac_g5_1.8_2.html
No PowerMac can run Mac OS 10.6.8 as stated in your profile. Is it possible you have a Mac Pro (has two optical drive slots on teh front panel. Althought a G5 PowerMac and a Mac Pro look similar, they have different troubleshooting procedures.
power mac g5 a1093 emc 2020 light stays on but wont start
