Here is what I did:
Replaced the dead power supply with a new one.
Still the system will not power up. I get a green 'Power LED' on the MLB and the LED on the power switch on the front panel shows green. It will not power up at all, no HD spin up, no video, dead as a hammer.
OK so I figure the MLB is fried. But I can't afford to replace the PC and junk it. Is there a MLB that will go into the Dell case? Or is there something I missed in troubleshooting that is particular to Dell MLB that I overlooked? I unplugged all non essental PCI cards before trying to power up in case one of those was causing it not to power up. The video card is not integrated into the MLB.
Here are the numbers off the MLB.
EZ1088 Rev. A01
PC is a Dimension 8200