elitebook 8760W laptop which has a problem with charging

[mohammed mohan]

Hello can you help

I have a hp elitebook 8760W laptop which has a problem with charging / the problem is in charge but the charge rate remains 0% / the battery and charger were replaced too, and I changed the BQ 726 it remained the same problem
I attached pictures of the problem

These are the special voltages in BQ 726
Pin voltage
1 = 19.06
2 = 19.06
3 = 19.41
4 = 19.41
5 = 3.341
6 = 2.671
7 = 0
8 = 3.360
9 = 3.360
10 = 3.348
11 = 0.147
12 = 0
13 = 0
14 = 0
15 = 0
16 = 6.038
17 = 5.841
18 = 0
19 = 0
20 = 18.33

Please help, thank you

[piernov]

Re: elitebook 8760W laptop which has a problem with charging

Did the laptop run properly from the "new" battery (AC adapter disconnected, when the battery was still charged) and did it report percentage properly?

[mohammed mohan]

Re: elitebook 8760W laptop which has a problem with charging

A good battery was placed on another laptop and the laptop was tested on the battery without a charger and when the charger is connected the charge percentage does not increase

[mcplslg123]

Re: elitebook 8760W laptop which has a problem with charging

ACDRV is not working. Check your first 2 dc-in mosfets and the voltage divider circuit for gate pin.

[qayyum786]

Re: elitebook 8760W laptop which has a problem with charging

Remove "Q14" MOSFET and check on I.C pin NO:- 4 (ACDRV) voltage = ?

[mohammed mohan]

Re: elitebook 8760W laptop which has a problem with charging

Remove "Q14" MOSFET and check on I.C pin NO:- 4 (ACDRV) voltage = ?

I removed Q14 "MOSFET

This is voltage 4 (ACDRV) voltage = 25.83

[mohammed mohan]

Re: elitebook 8760W laptop which has a problem with charging

ACDRV is not working. Check your first 2 dc-in mosfets and the voltage divider circuit for gate pin.

Thanks for replying, can you clarify more?
This is voltage 4 (ACDRV) = 25.83

[qayyum786]

Re: elitebook 8760W laptop which has a problem with charging

R83 rasistor value = ?

[mcplslg123]

Re: elitebook 8760W laptop which has a problem with charging

Thanks for replying, can you clarify more?
This is voltage 4 (ACDRV) = 25.83

Is this voltage after removing Q14 mosfet?? Your post#1 shows it at 19V. Can you clarify??

[qonma]

Re: elitebook 8760W laptop which has a problem with charging

replace ic harging and mosfet too

[mohammed mohan]

Re: elitebook 8760W laptop which has a problem with charging

Thank you my friends
A bug \ "Q14" was found to be replaced by MOSFET

[qayyum786]

Re: elitebook 8760W laptop which has a problem with charging

Remove "Q14" MOSFET and check on I.C pin NO:- 4 (ACDRV) voltage = ?