ms-16p51 not turning on

[crea2k]

I have an ms-16p51 here for repair. When you plug in the power it was getting no light, so I've flashed the bios and now getting a light, but still not turning on. 3.3v and 5v always on are present and the power button is getting 3.3 and dropping when pressed. Also when the power button is pressed the bios is getting 3.3 for a few seconds, but nothing else then turns on. Under thermals the only thing I see getting warm is the chip that supplies 3.3 and 5v, can't see any heat in anything else.

[Stevedb]

Re: ms-16p51 not turning on

Check ldo pins for short?

[Jmine]

Re: ms-16p51 not turning on

I have an ms-16p51 here for repair. When you plug in the power it was getting no light, so I've flashed the bios and now getting a light, but still not turning on. 3.3v and 5v always on are present and the power button is getting 3.3 and dropping when pressed. Also when the power button is pressed the bios is getting 3.3 for a few seconds, but nothing else then turns on. Under thermals the only thing I see getting warm is the chip that supplies 3.3 and 5v, can't see any heat in anything else.

How much amps do you see on the power supply before and after pressing the power button?

[Kelly French]

Did you find a fix? I have the same board with the same problem, it won't power up. I would sometimes get 1/2 second blink of the power light and a really short fan sound and then nothing. I suspect the power subsystem and have downloaded the schematic but it would help to hear what you've already tried.