A2442 820-02098 not charging

[hgoncalves]

Hi,

I have an A2442 820-02098 that isn't charging; it doesn't even recognize that the charger is plugged in, saying that it is always on battery. It doesn't charge on any port (USB or magsafe).

Already tried with an original proper charger in all ports.

PPDCIN_AON = 0V and 0.538 on diode reading.

PPVBAT_AON_CHGR_REG = 11V.

PPBUS_AON = 11V

I can't see any damages on the board, and the client said it stoped charging without reason.

I don't know where to begin.

Can you help?

 

[2informaticos]

USB meter stays black on all ports?

 

[hgoncalves]

Hi.

No, It showed 19V in all ports, but now, after I've it disabled it, and on the bench, it's only showing 5V on the USBC ports.

PP3V3_S2 = 0V and 0.450 in diode reading
PP1V8_S2 = 0V and 0.258 on diode reading

PP3V3_UPC2_LDO = 3.4V

FG200 = 0V, when conected to UG400.

With the IR camera, UG400 seams to be hot, even when coinecting on other USBC ports.

Is it possible to replace just this CD3217B12, for one from China or do I need to replace all of them?

Can you help?