plenrusldeituk

  • Laptop Lenovo 530-14ARR - brak obrazu na matrycy

It is currently 5 May 2025, 06:14

Laptop Lenovo 530-14ARR - brak obrazu na matrycy

 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 Laptop Lenovo 530-14ARR - brak obrazu na matrycy

by Piotrvx • 2 February 2025, 19:52
Witajcie!

Mam problem z laptopem Lenovo 530-14ARR.

Specyfikacja:
- Płyta główna: Lenovo YOGA 530-14ARR LCFC EYG11 ES433 ES434 EYG21 NM-B781

Objawy:
- Laptop się uruchamia, ładuje baterię.
- Brak obrazu na matrycy – nawet podświetlenie latarką nic nie pokazuje.
- Złącze matrycy i bezpieczniki sprawne.
- Napięcia:
- 20V pojawia się przy starcie z zasilacza i baterii na matryce. Brak obrazu podświetlenia itd
- 7V na samej baterii podczas uruchamiania.
- 3.3V zgodnie ze schematem za każdym razem +3vs_gsen2 , +3vs_cmos,+3vs_dmic.
- Brak zwarć, bezpieczniki ok.
- Obraz wyświetla się przez HDMI – laptop działa poprawnie na zewnętrznym monitorze.

Dodatkowe informacje:
- usterka spowodowana wymianą pamięci RAM na włączonym laptopie .
- Układ Lenovo LV5075B wygląda podejrzanie – widoczne jakby wypalenie, nie znajduje brakującego napięcia, wygląda sprawnie. Proszę o jakąś podpowiedź gdzie szukać :(

Ktoś miał podobny przypadek? Może to faktycznie ten układ?

Re: Laptop Lenovo 530-14ARR - brak obrazu na matrycy

by Google Adsense [BOT] • 2 February 2025, 19:52

#2 Re: Laptop Lenovo 530-14ARR - brak obrazu na matrycy

by Snaeyk1980 • 2 February 2025, 22:50
A matrycę podmieniałeś?

#3 Re: Laptop Lenovo 530-14ARR - brak obrazu na matrycy

by Piotrvx • 3 February 2025, 20:47
Tak. To nie matryca .

#4 Re: Laptop Lenovo 530-14ARR - brak obrazu na matrycy

by matic • 4 February 2025, 12:05
Measure the voltages to ground on pins 1, 14, 15, 16, 18, 20, 21, 24, 25, 28, 29, 31, 32 of LVDS connector JEDP1, when the machine is turned on with internal screen connected and external monitor disconnected from the board.

Re: Laptop Lenovo 530-14ARR - brak obrazu na matrycy

by Google Adsense [BOT] • 4 February 2025, 12:05
Similar Topics
Laptop Lenovo 530-14ARR - brak obrazu na matrycy
Laptop Lenovo 530-14ARR - brak obrazu na matrycy
  Lenovo YOGA 530-14ARR - Brak ładowania baterii  [SOLVED]
  Lenovo IdeaPad L340-15IRH Gaming - brak obrazu na matrycy  [SOLVED]
MSI MS-16R6 brak obrazu na matrycy
Asus R556L - Brak obrazu na matrycy X555LD REV 3.3

Who is online

Users browsing this forum: No registered users and 7 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.