Hp 15 gaming laptop charging problem

ahmarzo

Senior Member

Join Date: Mar 2015

Posts: 168

Country: india
#1

Hp 15 gaming laptop charging problem

08-26-2024, 10:07 AM

Have laptop motherboard la-f841p with charging problem in power on mode.the laptop charges in off condition but when powered on it goes on battery mode and stops charging and gate voltages of the first and second MOSFET goes to 0v.
Here is the link to the boardview plz help https://www.badcaps.net/filedata/fetch?id=2132131 as I can't find the schematic anywhere.
Tags: None
Stevedb

Stevedb

Join Date: Feb 2018

Posts: 622

Country: Belgium
#2

08-26-2024, 02:47 PM

Hi is your adapter recognised in bios?
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mcplslg123

Badcaps Legend

Join Date: Jun 2015

Posts: 7262

Country: india
#3

08-26-2024, 10:54 PM

ADAPTER rating as per specs? If you use a underrated adapter,it wont work.
Voltage on ADAPTER_ID?
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tomodachi

Badcaps Veteran

Join Date: Apr 2012

Posts: 593

Country: Turkey
#4

08-27-2024, 05:49 AM

Had exact same issue yesterday. Turned out to be a broken DC input jack pins were shorted inside(ID and 19V)
Replaced it and problem solved.

Last edited by tomodachi; 08-27-2024, 05:53 AM.
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mon2

Badcaps Legend

Join Date: Dec 2019

Posts: 13829

Country: Canada
#5

08-27-2024, 06:38 AM

Attached.

Last edited by mon2; 08-27-2024, 06:42 AM.
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ahmarzo

Senior Member

Join Date: Mar 2015

Posts: 168

Country: india
#6

09-14-2024, 05:17 AM

thank you very much my problem got solved it as indeed adapter id problem i changed two 10k resistor on adapter id line and the laptop s charging fine now .thanks everybody
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Hp laptop charging problem

by ahmarzo

Have hp laptop motherboard part no opp 17 diner skl/kbl 15289-2 with charging problem.the laptop shows plug in charging but percentage doen not increases.the schematic or boardview is not available.

Charging ic is bq737 with voltages on pin no
1&2 -19v
34&5 -0v
6 -2.56 v
7- 0v
8&9 -3.15v
10 -0v
11 -0.18v
12 & 13 -13v
14&15 -0v
16 -6v
17;18&19 -13v
20 - 19v

Voltages on battery connector are
1&2. -13v
3&4 -3.14 v
5&6 -0v
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Hp 15 gaming laptop charging problem

Hp 15 gaming laptop charging problem

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