Question How can i found old motherboard Power Button Pins

[keremdikmen]

Hi, i found recently old "HP Compaq dc5800 Small Form Factor " PC's motherboard. And owner says it was working a week ago. But i couldn't find power button's pins and i couldn't start it. Service manual doesn't point out exactly power button pins. Also there is a diagnotistic led and when i plug the psu to mb (Without using any power button pins) it turns green. It's meaning "computer on" for the manual but even cpu fan pins doesn't have voltages. How can i figure out this it doesn't look broken.

Thank You.

Pins;
☻☻☻☻☻
☻☻☺☻☻

 

[Grobe]

Do you have access to the cabinet? I have a slightly suspicion that it is made to fit a HP unique cable connector to the HP front panel.

 

[keremdikmen]

I added photo. When i wrote the topic it gave server error. I haven't any cable and its different socket from what I've seen before.

 

[Alabalcho]

Try shorting pins in pairs, like ten tries. If that pair happens to be a LED, it won't be ON anyway.

 

[Grobe]

Have a look here:
h30434.www3.hp.com/ . . ./Front-Panel-Power-Power-LED-and-HD-Led-Pinout/td-p/7572180

Look at the very last post.

 

[keremdikmen]

Thank you for comments. But any combinations doesn't work. I connected psu to powermeter and it just stay 2.3w no differences. So it is a broken motherboard (For the manual and diagnotistic led i think its not but) or any ideas?

 

[keremdikmen]

I can't run the card. Its looks like normal and mb's green light turning on when connect psu but doesn't work. So is it faulty board?