• HP 15-CB060SA płyta DAG75AMBAD0 REV:D Na zasilaczu procesor działa na 0,79GHz

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 HP 15-CB060SA płyta DAG75AMBAD0 REV:D Na zasilaczu procesor działa na 0,79GHz


by bratapita 4 April 2024, 12:51
Witam. Wspomniany HP 15-CB060SA płyta DAG75AMBAD0 REV:D (MODEL: G75A), procesor intel i5-7300HQ, VGA GTX 1050.
Laptop działa normalnie na baterii, która oczywiście ładuje się do pełna po podłączeniu zasilacza.
Na podłączonym zasilaczu taktowanie procesora spada do 0,79GHz na odłączonym procesor działa z pełnym taktowaniem. Zmiany zachodzą w ciągu kilku sekund po podłączeniu zasilacza.
System zainstalowany "czysty", bios zaktualizowany.
Zasilacz zamiennik zgodny z wymaganiami laptopa, na drugim zamienniku (słabszym) to samo. Niestety innego zasilacza nie mam.

EDIT: Zainstalowałem program ThrottleStop 9.6 i po odznaczeniu opcji BD PROCHOT procesor działa w pełni normalnie. Oczywiście do następnego restartu.
Jeśli ktoś ma jakieś pomysły to zapraszam.

Re: HP 15-CB060SA płyta DAG75AMBAD0 REV:D Na zasilaczu procesor działa na 0,79GHz


by Google Adsense [BOT] 4 April 2024, 12:51

#2 Re: HP 15-CB060SA płyta DAG75AMBAD0 REV:D Na zasilaczu procesor działa na 0,79GHz  [SOLVED]


by matic 4 April 2024, 22:02
Hello!

Measure the following voltages to ground with the power supply connected.
- On pins 4, 5 of charger chip PU1001.
- On pin 67 of KBC chip.

#3 Re: HP 15-CB060SA płyta DAG75AMBAD0 REV:D Na zasilaczu procesor działa na 0,79GHz


by bratapita 5 April 2024, 08:55
Napięcia na PU1001 (BQ738H):
-pin 4 - 25,45V
-pin 5 - 3,049V
Na pinie 67 KBC (IT8987E) jest 0,497V (rozumiem, że to za niska wartość)

Edit: Dla potomnych- winowajcą okazało się za niskie napięcie na pinie 67 KBC - po usunięciu problemu napięcie w tym wypadku wynosi 1,036V

Re: HP 15-CB060SA płyta DAG75AMBAD0 REV:D Na zasilaczu procesor działa na 0,79GHz


by Google Adsense [BOT] 5 April 2024, 08:55

Who is online

Users browsing this forum: No registered users and 1 guest

_______________________________
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.