Identyfikacja elementów LENOVO IDEAPAD 300-15ISK

Płyta główna NM-A481 okolice "chargera"


Zaznaczone na czerwono:

Podaj z którymi pinami BQ łączą się te elementy, na zdjęciu nie widać.

Hello!

I think that components should be the following (check the connections according to the schematic for sure):
1 -> Resistor PR303 = 499kΩ/1%, package 0402
2 -> Capacitor PC323 = 100nF/25V, package 0402
3 -> Capacitor PC327 = 100nF/25V, package 0402
4 -> Capacitor PC322 = 100nF/25V, package 0402
5 -> Resistor PR330 = 0Ω/5%, package 0402

daro19862 написав:

I have a feeling that something is wrong here.

Yes i have 0,1 Ω.
Pick up charger and check?
PR330 have 100k Ω change to 0 Ω?

@edit
Wstawiłem PR330 0 Ω i laptop się uruchamia już tylko pytanie co dalej z tym zwarciem na "charger"?

@edit
Ale brak jest ładowania baterii, natomiast jak wstawie z powrotem 100k Ω to ładowanie działa ale laptop się nie włącza.
Gdy wstawiony jest PR330 0 Ω laptop uruchamia się w systemie piszę że ładuje ale prądu nie pobiera do ładowania, jeżeli odłączę zasilacz to działa z baterii natomiast jeżeli laptop jest wyłączony i podłączona jest bateria bez zasilacza to laptop nie uruchomi się.

matic написав:Hello!

5 -> Resistor PR330 = 0Ω/5%, package 0402

Its PR333.

I have a feeling that something is wrong here.

I think is good look:


When I exchanged the PR333 at 0 ohms, the laptop started up several times in a row, but it was a coincidence.

Is the highlighted pin connected to the pin 1 of transistor PQ314?

This pin is GND, not connected to pin 1 of transistor PQ314

daro19862 написав:This pin is GND, not connected to pin 1 of transistor PQ314

If so, something is wrong with the connections, which you illustrated in the post #4, as I mentioned before.

According to the schematic there is no component, which is connected to pin 1 of resistor PR338 and ground.

According to the diagram of p. 1, the resistor PR338 connects to the capacitor PC322 and PC323.

Ok, but the connection between pins 1, 2 of shunt resistor PR317 is at the resistor footprint itself.
I'm pretty sure that there is no copper path on the board, which you indicated.

I think that all component values should be as I described in post #3.

There is no copper path between these pins, but the multimeter showed 0 Ω because there is a resistor PR317.

You sure thats is PR330 ? After desoldering has an equivalent of 100k Ω