well at this point i think i'm ready to let this one go. I dont have a ESR meter even though the caps are probably fine. My experience isn't enough for this type of repair... I will scrap the supply, desolder every component and test it to find the fault. Hoping i learn more about it and be able to repair the next one that comes. In the end it did came from a junk yard, i will try to see if i find some more but they are hard to come by.
Is the 5V only for auxillary start up or main supply aslo?
The 5V is not just auxiliary it's also a supply output but completely dedicated circuit.
Now rereading OPs posts again I have doubts, rodrigopires did you turn on the supply by shorting proper pins?
Yes i did, not like this picture, i soldered the small contact with the wire to that tinned contact not to ground, but it must be the same thing because this supply has worked before and the other one i have works perfectly and is the same way.
Thanks everyone for all the help
and i will post my results as i go