HP 820 G3 - wont charge battery

[CornholioGSM]

Hello,
i have problem with two same 820 g3 laptops - mobo 6050A2892301-MB-A01.
Both have same symptom - Battery is detected,system shows charging, but wont charge nothing. Maybe it was smashed with cheap charger but i dont know.
Interesting is, that battery is in bios/diagnostic detected...BUT is detected disconnected too.
Have anyone idea what can be wrong?...or have anyone schematics for this mobo?

Thank you

[Techtiger]

Re: HP 820 G3 - wont charge battery

Voltage on the Coil and the 3caps + the Voltage on the Battery connector 8 pins Except the ground once

[CornholioGSM]

Re: HP 820 G3 - wont charge battery

coil 5.3V, caps 5.28, connector from left 1=G, 2=G, 3=nothing, 4=nothing, 5/6=3.35V, 7/8=11.9V.

Laptop indicates with orange led battery charging with disconnected battery too

[Techtiger]

Re: HP 820 G3 - wont charge battery

coil 5.3V, caps 5.28, connector from left 1=G, 2=G, 3=nothing, 4=nothing, 5/6=3.35V, 7/8=11.9V.

Laptop indicates with orange led battery charging with disconnected battery too

that Gary coil with 5.3V is not connected to the pin 7/8 of the find out which coil is connected to the pin 7/8 and test Diode mode that coil without power for the Mob, test pin 7/8 to GND +/- multimeter buzzer mode without power , pin 3/4 is DATA , CLK you should millivolts with multimeter, What is you SIO IC number and charger IC number ,test voltage in your dc jack middle pin connected with the Mob

[jasko_jacker]

Re: HP 820 G3 - wont charge battery

but do you use the same power supply for both notebooks?
If so, change it with original spare.
It's strange that two notebook have the same symptom