i am working on a Dell Dimension 4600c.
This machine will not power up, it has a blinking amber light on the MB, and the power buttton on the front steadily blinks amber.
I assumed it was the power supply, so I took one off the shelf and tested. it worked. So I ordered new PS. Got it in, and that one didn't work.
Digging deeper, I tested the original PS with a PS tester, and all checks out. Tested the GOOD PS off the shelf, and it tested good as well. Tested the new one, and it is flat bad
Why will 1 PS work, and the other won"t
What am I missing here?