• Monitor LENOVO G32QC-10 brak reakcji na zasilanie, nie daje 12V

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 Monitor LENOVO G32QC-10 brak reakcji na zasilanie, nie daje 12V


by Tadzaiorek 7 February 2023, 10:25
Witam mam problem z monitorem LENOVO G32QC-10, nie reaguje na przycisk zasilania, po rozebraniu i przemierzeniu płytki logiki zauważyłem że płyta nie jest zasilana 12V, dostaje napięcie od 1,68V do 2V ( występuje tutaj powolny wzrost napięcia ). Po podaniu 12V na zasilanie logiki włącznik się zaświecił i reagował na przycisk. Wymieniłem w pierwszej kolejności dwa kondesatory idące bezpośrednmio na zasilanie logiki, niestety bez zmian. W następnym etapie przelutowałem wszystkie połączenia w celu wykluczenia zimnych lutów, ( widziałem kilka prawdopodobnych miejsc ), nie przyniosło to zmian.

I teraz uprzejmnie proszę o pomoc, gdzie mógłbym jeszcze szukać przyczyny, co mogę zmierzyć?

Image
Image

Re: Monitor LENOVO G32QC-10 brak reakcji na zasilanie, nie daje 12V


by Google Adsense [BOT] 7 February 2023, 10:25

#2 Re: Monitor LENOVO G32QC-10 brak reakcji na zasilanie, nie daje 12V


by matic 7 February 2023, 20:10
Hello!

- Please, post a clear picture with visible markings on the primary 6-pin controller chip.

- Measure the voltage on the mains filter capacitor (the big 450V capacitor).
Be aware of high voltages.

#3 Re: Monitor LENOVO G32QC-10 brak reakcji na zasilanie, nie daje 12V


by Tadzaiorek 7 February 2023, 22:44
Image

DC capacitor 317 V

#4 Re: Monitor LENOVO G32QC-10 brak reakcji na zasilanie, nie daje 12V


by matic 9 February 2023, 13:24
Please, post a clear picture with visible markings on the small 6-pin primary controller chip.

#5 Re: Monitor LENOVO G32QC-10 brak reakcji na zasilanie, nie daje 12V


by Tadzaiorek 10 February 2023, 16:28
Image
Image
Image
Image

#6 Re: Monitor LENOVO G32QC-10 brak reakcji na zasilanie, nie daje 12V


by matic 20 February 2023, 20:15
The markings on that 6-pin chip are not clearly visible in your picture. Post a better picture with a visible markings.
It sometimes help to apply a small amount of white thermal paste on the chip to highlight the markings on it.

#7 Re: Monitor LENOVO G32QC-10 brak reakcji na zasilanie, nie daje 12V


by Tadzaiorek 21 February 2023, 10:18
Image

Re: Monitor LENOVO G32QC-10 brak reakcji na zasilanie, nie daje 12V


by Google Adsense [BOT] 21 February 2023, 10:18

Who is online

Users browsing this forum: No registered users and 0 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.