G750jz bq375 issue

[jasko_jacker]

After a short in AC_DOCK_IN line the 10 Ohm resistor which provides vcc to bq735 broke out. I change this resistor and for security the BAT54cw diode.
the system worked for two days after that the battery did not charge.
I measure the voltage on 10 Ohm resistor and it's about 4v.
I check all caps around bq347, resitors , etc but all seem ok.
the replacement of bq347 no change the situation.
I removed the bq347 and on 10 Ohm resitor, I read only 16-17 volt instead 19V and this reading persist even after I removed all caps and first mosfet on AC_DOCK_IN.

[piernov]

Re: G750jz bq375 issue

Is PD8802 good? What is the voltage on A/D_DOCK_IN and DC_JACK_IN?
Both sides of PR8842 measures 16V?
After PD8802 there is a slight voltage drop but it shouldn't exceed 0.4V.

[jasko_jacker]

Re: G750jz bq375 issue

Is PD8802 good? What is the voltage on A/D_DOCK_IN and DC_JACK_IN?
Both sides of PR8842 measures 16V?
After PD8802 there is a slight voltage drop but it shouldn't exceed 0.4V.

Hi Piernov, thanks for reply;
the 16v remain also without diode, the resistive partition (ac detect) should not affect this voltage, i did the same test with a g75vw and i read 19V. If I remove pr8814 the 19v returns, so I checked the resistors value pr8814 = 127K and pr8815=20K pc8825 is ok.
How is it possible?
before welding all the components I've removed, I would like to solve this problem.