Acer Aspire 5749 DA0ZRLMB6D0 does not turn on

Hi everyone! I have an Acer Aspire 5749 with a DA0ZRLMB6D0 motherboard which does not turn on or do anything.
The consumption is 0A and when pressing the power button it only goes up to 0.020A for a few seconds.
I have measured the resistance with respect to ground of the main coils:
PL11 ... 18Ω
PL14 ... 113Ω
PL10 ... 260Ω
PL6 & PL7 ... 6,5Ω
PL8 ... 21Ω
PL9 ... 6,5Ω

+3VCPU and +5VCPU are present.
+15V is present but with 12.88V. The value is a bit low and I don't know if it is within the normal range
On the power button the 3V is present and when pressing the button it drops to 0V.

On the KBC I have made the following measurements:
Pin 26 ... 0V (S5_ON)
Pin 75v...0V (RSMRST#_UR)
Pin 76 ... 3,3V (+3VPCU_EC)
Pin 91 .... 0V (DNBSWON#)
Pin 95 ... 3,3V (NBSWON#) When you press the power button it drops to 0V
Pin 64 ... 3,3V (ACIN)

Any help?

Who or how are the 15V generated? I don't understand the diagram.

The 15v are generated by the voltage doubler formed by PD7, PD6, PC150, PC146

Machine писал(а):The 15v are generated by the voltage doubler formed by PD7, PD6, PC150, PC146

Thank you so much

In that case, I interpret 12.8V as a low value, right?
Therefore, there must be some bad component in that area
Is this correct?

No, even 12.6V are sufficient to make the mosfets conductive.