Midnight Gardner, It sounds like the power supply is down. You can test the health of the power system by pressing the test button. When the system power supply voltage is within specification, the self-test LED lights up. If the LED does not light up, the power supply may be defective. Which it sounds like you have tried. You can also try taking the server to a Minimum to Post configuration, that is removing everything from the server, but the following; If the system still doesn't power, and the power supply still shows no signs of power, then I would look at replacing the power supply. Let me know.
Hi, I've a new PowerEdge T20, but on the fourth or so boot during setup there was a loud 'pop' from the PSU area and now nothing works.  The fuse in the power supply cable plug was gone so I've swapped to another known good cable (tested before and after) and still no joy - no green light on the back of the PSU and no other signs of life.  I have tried pressing the little button on the PSU next to the light (perhaps a reset button?) but no results from this either.  Do I have to wait until Monday and call Dell for a replacement or is there anything I can do over the weekend? Thanks!
T20 PSU fault?