thanks for reply
now that you mention the first possible reason... i remember something, when i unplug the card the first time for check it, the fan was burn, mostly by the plastic part arround the motor, the plastic was melt, so i think it was overheating....... anyway warranty is off-the-limits
they said "it expired three month ago" so, theres nothing i can do about it, and all the capacitors seems ok... the only thing i can think about get a gun and shoot.... i mean, do you think that re-soldering could help?
oh, i forgot, i had change the fan and it "trying to spin" but the power supply still shuts down right after I press power. (and i even try without fan connected... the same)