msi modern 15A11M not works

Hi
I have a Msi modern notebook 15A11M-217XIT-GG51135U8GXXDXX
with mainb ms-15521 rev 1.0....that doesn't start, no LEDs on, black screen.
I'll start by saying that I don't have the wiring diagram or even a boardview. I can't find it online
Pls can someone help me?
Thank
Fabrizio

No documentation available for this PCB at the moment. Please post a clear, high resolution photos of both sides of your PCB, after removing all films which may have covered the components.

Hello!

Measure the resistances and voltages to ground on coils marked "3R3" located near the battery connector.

Hi, Matico I performed the resistance measurements and they are ok 3.3 OHM and in the attached photo I send you the values ​​of the measured voltages
Thanks
p.s.: on the other hand, the 3.40v 3R3 has 2.50v

Fabrizio написав:I performed the resistance measurements

But it seems not in reference TO GROUND but rather BETWEEN the pins of coils, which is definitely not what Matic has asked for. I also believe that your multimeter is not good if it measures 3,3Ω at such coils, as their DC resistance should be around 0,02Ω.

Fabrizio написав:on the other hand, the 3.40v 3R3 has 2.50v

When you measure at switches side of the coil, it is not a DC voltage but rather a high frequency voltage PULSES, which many of cheap and low quality multimeters cannot measure correctly (in rare cases you may even destroy the multimeter's A/D converters). That's why the only correct way of measuring voltages on such coils is to measure them at the OUTPUT side of step-down converter (at the filter capacitors side). But it should be obvious for someone whose experience level has been set to "advanced".

Because the stand-by voltages are present, the next step is to check whether there is a 3,3V voltage to ground on the power button and it goes to 0V when the button is pressed.

-First of all I have to apologize... I'm a BEGINNER... I've already corrected the profile, I didn't notice the wrong selection.
-I have to admit that my tester is not professional.
-the switch and a key on the keyboard...and here I see it very difficult to find the 3 volts without knowing which pin it refers to, not having an electrical diagram.
Anyway, if anyone has suggestions, I'm always ready to receive them

But you still haven't answered the question about the resistances in reference to ground on both coils from the post #4.

Hi I have taken the measurements
A-Gnd =0.6 Mohm
B-Gnd =100Kohm
C-Gnd= 500ohm
D-Gnd=500ohm
A-Gnd= 5.14Volt
A-Gnd= 3.38 volt

The resistances to ground on points C, D seems too low.
Remove this coil from the board and remeasure the resistances to ground on points C, D.