I have a update,

when checking the bottom of the board i noticed the following:



DC-Jack is for orientation. In the green box there is a AS393M-G1 voltage comparator.
Here is the datasheet: https://www.alldatasheet.com/datashe...AS393M-G1.html

According to the datasheet, the most left bottom pin/leg is for GND, where the most right top pin/leg is for VCC. When measuring against GND (from metal cover of the usb port for example) i get continuity on both of them. But i think it only should be on the GND pin of course....

Hello,

this is my first post at Badcaps and in general i am new to fixing electronics. I am looking forward to learn a bit more about diagnosing and repairing :-)

What I have around is a DELL OPTIPLEX 3060 Micro (USFF), which is not powering on, even not showing any signs of life (No amber / white LED).
I got a original 65W DELL PSU / Power brick (PA-12 / 074VT4) which hopefull should be the correct one. I could get another DELL PSU with the Partnumber 0G6J41 with the same 4.9mm DC Jack connector as the one I already have, but I dont think that would help (maybe...