I have this board here the seller told me that it doesnt power on.
Symptoms:
When the PSU is turned on and in stand by, the power button lights up, and on the POST card 3vsb is present. there is also 3v at the power switch.
When power button is pressed. everything flashes and turns on for a split second and turns back off. pressing the button more does nothing. but if you press the clear CMOS button, it powers right up again and stays on.
No post codes.
Checked the reset pin and there is 3.4v or whatever present there, which tells me that it had completed power sequence or close to completed it?
Checked the power rails for shorts everything seemed fine no shorts are present.
Checking voltages, there is 0.9v and 3.3v coming into the PCH chip. there is 1.5v for the msata, and memory, core voltage reads 0.65v, 0.36v at the bottom of the vcore.
Im quite clueless as to where to go from here? Could it be a SIO gone bad? or something in the power protection circuit dead? why would it just do a false start like that?
Symptoms:
When the PSU is turned on and in stand by, the power button lights up, and on the POST card 3vsb is present. there is also 3v at the power switch.
When power button is pressed. everything flashes and turns on for a split second and turns back off. pressing the button more does nothing. but if you press the clear CMOS button, it powers right up again and stays on.
No post codes.
Checked the reset pin and there is 3.4v or whatever present there, which tells me that it had completed power sequence or close to completed it?
Checked the power rails for shorts everything seemed fine no shorts are present.
Checking voltages, there is 0.9v and 3.3v coming into the PCH chip. there is 1.5v for the msata, and memory, core voltage reads 0.65v, 0.36v at the bottom of the vcore.
Im quite clueless as to where to go from here? Could it be a SIO gone bad? or something in the power protection circuit dead? why would it just do a false start like that?
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