Hello, I have a laptop DELL P40G (LA-9591P REV 1.0) that does not work, when I press the power button, the start LED sometimes lights up then goes out immediately.
I checked everything on the motherboard, no short, even the processor has good resistance, no liquid damage.
So I started to check the S5 voltages, I'm missing it +3.3V_M and +1.05V_M.
PU300 and U45 are well powered with +5V_ALW but PU300 does not give +1.05V_M (no EN_+V1.05SP neither​), and U45 does not give +3.3V_M, there are no shorts around.
schematic and bordview : https://www.badcaps.net/forum/docume...ew#post3479536
Can you help me understand and find where the problem comes from please, I am not an expert
I checked everything on the motherboard, no short, even the processor has good resistance, no liquid damage.
So I started to check the S5 voltages, I'm missing it +3.3V_M and +1.05V_M.
PU300 and U45 are well powered with +5V_ALW but PU300 does not give +1.05V_M (no EN_+V1.05SP neither​), and U45 does not give +3.3V_M, there are no shorts around.
schematic and bordview : https://www.badcaps.net/forum/docume...ew#post3479536
Can you help me understand and find where the problem comes from please, I am not an expert
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