• Nie uruchamia się na zasilaczu Lenovo IdeaPad 5 15IAL7 LCFC JS574 NM-E401

It is currently 14 October 2025, 23:43

Nie uruchamia się na zasilaczu Lenovo IdeaPad 5 15IAL7 LCFC JS574 NM-E401

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  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 Nie uruchamia się na zasilaczu Lenovo IdeaPad 5 15IAL7 LCFC JS574 NM-E401

by praktykant1 • 7 October 2025, 11:22
Dzień dobry,

płyta trafiła do mnie z ze zwarciem na 3v, uszkodzony okazał się być układ it8227vg-256, po wymianie i zaprogramowaniu laptop działa, ale tylko na baterii. Na zasilaczu nie uruchomi się.
Po podpięciu baterii i zasilacza nie ładuje baterii, nie pobiera też prądu ale uruchamia się i działa na baterii.

Wymieniłem układ BQ25710 oraz tps65994.
Bios zaprogramowany czystym wsadem. Bez zmian - działa tylko na baterii.

Po podłączeniu zasilacza USB-C na na CHARGE_VBUS - pin 1 BQ25710 pojawia się na 2 sekundy 5v.

Proszę o pomoc w dalszej diagnostyce.

Re: Nie uruchamia się na zasilaczu Lenovo IdeaPad 5 15IAL7 LCFC JS574 NM-E401

by Google Adsense [BOT] • 7 October 2025, 11:22
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