Hello can you help 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

[qayyum786]

Re: Hello can you help elitebook 8760W laptop which has a problem with charging

You mean charging but battery percentage is not increasing ?

[qayyum786]

Re: Hello can you help elitebook 8760W laptop which has a problem with charging

After plug charger
Give BQ24726 all 20 pin voltages

[piernov]

Re: Hello can you help elitebook 8760W laptop which has a problem with charging

Did the computer run with the "new" battery until it discharged?

[mohammed mohan]

Re: Hello can you help elitebook 8760W laptop which has a problem with charging

You mean charging but battery percentage is not increasing ?

yes

[mohammed mohan]

Re: Hello can you help elitebook 8760W laptop which has a problem with charging

Did the computer run with the "new" battery until it discharged?

Yes, it consumes the battery and does not charge

[mohammed mohan]

Re: Hello can you help elitebook 8760W laptop which has a problem with charging

After plug charger
Give BQ24726 all 20 pin voltages

Explain to me, please

[qayyum786]

Re: Hello can you help elitebook 8760W laptop which has a problem with charging

IC number U9 Have 20 PINS
check each pin voltage from 1 to 20 pin
And let us know
Pin voltage
1 = ?
2 = ?
3 = ?
4 = ?
5 = ?
6 = ?
7 = ?
8 = ?
9 = ?
10 = ?
11 = ?
12 = ?
13 = ?
14 = ?
15 = ?
16 = ?
17 = ?
18 = ?
19 = ?
20 = ?

[mohammed mohan]

Re: Hello can you help elitebook 8760W laptop which has a problem with charging

I will check the points and tell you

[mohammed mohan]

Re: Hello can you help elitebook 8760W laptop which has a problem with charging

Hello how are you
I measured points and this result

Pin voltage
1 = 3.570
2 = 0.
3 = 0.
4 = 0.498
5 = 0.509
6 = 0
7 = 0
8 = 0
9 = 0
10 = 0.271
11 = 3.33
12 = 3.33
13 = 3.33
14 = 0
15 = 2.636
16 = 0
17 = 18.24
18 = 19.38
19 = 19.38
20 = 18.94

.

[Spider1211]

Re: Hello can you help elitebook 8760W laptop which has a problem with charging

Were these measured with the battery or AC adapter or both connected?

[lapfix]

Re: Hello can you help elitebook 8760W laptop which has a problem with charging

Do you have schematic !.
Pin 1/2 (ACN and ACP ) must have your VCC Input !

Try again your measure with charger ( no battery)

Voltage of the first 2 mosfet all pins ( S/D/G )

[mcplslg123]

Re: Hello can you help elitebook 8760W laptop which has a problem with charging

Lot of problems there-ACN/ACP/ACok/ACDET/SDA/SCL etc etc.

[mohammed mohan]

Re: Hello can you help elitebook 8760W laptop which has a problem with charging

Do you have schematic !.
Pin 1/2 (ACN and ACP ) must have your VCC Input !

Try again your measure with charger ( no battery)

Voltage of the first 2 mosfet all pins ( S/D/G )

Checked the points again
I apologize for the previous scan. I got it wrong in series

[mohammed mohan]

Re: Hello can you help elitebook 8760W laptop which has a problem with charging

Lot of problems there-ACN/ACP/ACok/ACDET/SDA/SCL etc etc.

Checked the points again
I apologize for the previous scan. I got it wrong in series

[mohammed mohan]

Re: Hello can you help elitebook 8760W laptop which has a problem with charging

Checked the points again
I apologize for the previous scan. I got it wrong in series

[lapfix]

Re: Hello can you help elitebook 8760W laptop which has a problem with charging

Even this update you stil got a lot of problems , so Voltage of the first 2 mosfet all pins ( S/D/G ).
If you have schematic post it here

[Spider1211]

Re: Hello can you help elitebook 8760W laptop which has a problem with charging

Checked the points again
I apologize for the previous scan. I got it wrong in series

Are you sure you counted the pins correctly? ACOK, SDA & SCL are small signal lines and should not be more that 3.3V at maximum. You also did not answer the questions as to whether the voltage you measured were using AC adapter only, battery only or both AC adapter & Battery.

You did mention that the laptop was turning ON and from the 1st picture in 1st post, we can assume you have the AC adapter connected. With the AC adapter connected, you should have 19V on pin 1, 2 and 20 as well as 3.3V on ACOK. ACDET should be around 6V something (need to check schematics).

[mcplslg123]

Re: Hello can you help elitebook 8760W laptop which has a problem with charging

Checked the points again
I apologize for the previous scan. I got it wrong in series

It seems you are counting pins in a wrong fashion.

[mcplslg123]

Re: Hello can you help elitebook 8760W laptop which has a problem with charging

Are you sure you counted the pins correctly? ACOK, SDA & SCL are small signal lines and should not be more that 3.3V at maximum. You also did not answer the questions as to whether the voltage you measured were using AC adapter only, battery only or both AC adapter & Battery.

You did mention that the laptop was turning ON and from the 1st picture in 1st post, we can assume you have the AC adapter connected. With the AC adapter connected, you should have 19V on pin 1, 2 and 20 as well as 3.3V on ACOK. ACDET should be around 6V something (need to check schematics).

Agree with your observations@spider1211 except ACDET signal. It should'nt be 6V. may be approx 2.6V. ReGN should be 6V instead.