• Notebook Acer Nitro 5 GH53G La-L191P rev:1C - brak ładowania baterii

It is currently 3 May 2025, 04:28

 [SOLVED] Notebook Acer Nitro 5 GH53G La-L191P rev:1C - brak ładowania baterii

 Forum rules: Click here to view the forum rules

  1. Topic title should contain: the device's manufacturer, full model and the brief description of problem.
  2. Topic message should contain: the PCB marking code (required in case of hardware repairs), an extended description of problem, things you have checked/replaced/measured, your conclusions and the question. If you are not able to find the PCB marking code, please read THIS TOPIC. If you still cannot locate the PCB markings, please upload a clean, both-side photos of the mainboard - it is required to remove any films, modules or brackets possibly covering these markings.
  3. Before posting a new topic please read all topics in TRAININGS subforum and make a preliminary diagnostic based on the content of those trainings.
  4. Uploading of any complete schematics, BIOS / firmware files or any other kind of documentation, or linking to 3rd party websites with such files, is STRICTLY PROHIBITED. You can only upload the small portion of documentation or, link to BIOS file on UNVERIFIED BIOS FILES subforum, which simplifies the diagnostics/repair. You are not allowed to upload more then one complete page of instruction/schematic per single topic. The file you upload must not contain any watermarks, "confidential" markings, links or email addresses and cannot be password-protected.
  5. It is only permitted to describe one faulty device per single topic - you should always open a new topic for each subsequent device.
  6. Requesting of the full schematics, BoardView files, BIOS files or any other kind of documentation is NOT ALLOWED in this subforum. If you need to ask for any of these, you should open a new topic in DOCUMENTATION/BIOS REQUEST subforum.

#1 Notebook Acer Nitro 5 GH53G La-L191P rev:1C - brak ładowania baterii

by pawel1978 • 28 April 2025, 09:33
Witam szanowne grono. Na stole Acer Nitro 5 GH53G La-L191P rev:1C. Notebook uruchamiał się na kilka sekund po czym wyłączał się. Spalone - wręcz przyspawane kondensatory PC502 i PC503 (10U_0603_25V6M) zostały wymienione na 10U 25V w nieco większej obudowie z oznaczeniem bodajże 25V6K. Notebook uruchamia się prawidłowo jednak nie ładuje baterii. Po naprawie bateria podziałała aż do rozładowania. Pomiary z PJP201:
1. 0V
2. 0V
3. 3,21V
4. 3,21V
5. 0,15V
6. 0V
7. 14,5V
8. 14,5V

Windows wykrywa baterię - 0% - zasilanie sieciowe. Dioda od ładowania sygnalizuje ładowanie.
Proszę o pomoc w namierzeniu usterki.

edycja: Zauważyłem, pobór prądu 3,7A i ładowanie jeśli wtyk zasilacza nie jest wciśnięty do końca :roll:
W momencie dociśnięcia wtyku pin 4 gniazda ADAPDET zwiera do masy i pobór prądu spada do 0,01 w stby

Re: Notebook Acer Nitro 5 GH53G La-L191P rev:1C - brak ładowania baterii

by Google Adsense [BOT] • 28 April 2025, 09:33

#2 Re: Notebook Acer Nitro 5 GH53G La-L191P rev:1C - brak ładowania baterii

by matic • 28 April 2025, 14:05
Hello!

Measure the voltages to ground on all pins of transistor PQB17 in the following cases:
a) Power supply plug half-inserted.
b) Power supply plug plugged completely.

#3 Re: Notebook Acer Nitro 5 GH53G La-L191P rev:1C - brak ładowania baterii

by pawel1978 • 28 April 2025, 14:20
Thank you matic for your answer
Measurements from PQB1 (battery disconnected)
Plug halfway

1. 0V
2. 5,83V
3. 0V

Plug all the way
1. 2,6V
2. 0V
3. 0V

#4 Re: Notebook Acer Nitro 5 GH53G La-L191P rev:1C - brak ładowania baterii

by matic • 28 April 2025, 16:39
Measure the voltages to ground on pins 1, 4, 5 of transistors PQB13, PQB18, PQB19 with the power supply + battery connected (power supply plug plugged completely).

#5 Re: Notebook Acer Nitro 5 GH53G La-L191P rev:1C - brak ładowania baterii

by pawel1978 • 28 April 2025, 17:00
PQB13
1 - 14,95V
4 - 14,91V
5 - 19,1V

PQB18
1 - 19,7V
4 - 19,7V
5 - 19,7V

PQB19
1 - 19,7V
4 - 19,7V
5 - 19,1V

#6 Re: Notebook Acer Nitro 5 GH53G La-L191P rev:1C - brak ładowania baterii  [SOLVED] 

by matic • 28 April 2025, 17:44
With these measurements the transistor PQB18 or PQB11 (if present) is damaged. Check them.

#7 Re: Notebook Acer Nitro 5 GH53G La-L191P rev:1C - brak ładowania baterii

by pawel1978 • 29 April 2025, 14:18
Damaged PQB18 - replacing it with MDU1511 solved the problem. Matic - as usual, thank you very much for your help :)

Re: Notebook Acer Nitro 5 GH53G La-L191P rev:1C - brak ładowania baterii

by Google Adsense [BOT] • 29 April 2025, 14:18
Similar Topics
  [EC/KBC DUMP REQUEST] Potrzebny pilnie wsad EC - Acer PT315-53 na płycie GH53G LA-L191P rev. 1C  [SOLVED]
  Acer N20C1 GH53G LA-L191P nie włącza się po zalaniu.  [SOLVED]
Acer Aspire E5-575 (DAZAAMB16E0 REV. E) - Nie działa na baterii, brak ładowania
  Acer Predator PH315-54 / PH317-55 (LA-L191P) - Strange Fan Problem?  [SOLVED]
  Laptop Acer An515-51-5491 płyta LA-E911P rev.1A brak ładowania  [SOLVED]
Acer Nitro 5 LA-F951P Rev 1 Non Accende

Who is online

Users browsing this forum: No registered users and 6 guests

_______________________________
All rights reserved. Unauthorised copying of this website's content or any of its part is strictly forbidden.
Any trademarks, brand names, products or services published on this website belong to their legal owners, are copyrighted and used for information purposes only.