• Lenovo IdeaPad 3 15IIL05 - NM-D031 po zalaniu nie uruchamia się

It is currently 30 June 2025, 03:38

Lenovo IdeaPad 3 15IIL05 - NM-D031 po zalaniu nie uruchamia się

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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.
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 This topic is marked as ARCHIVAL. Please only reply if your message contains the solution (Terms and Conditions p. 12.1).

#1 Lenovo IdeaPad 3 15IIL05 - NM-D031 po zalaniu nie uruchamia się

by domo997 • 28 November 2023, 18:00
Pacjent to Lenovo IdeaPad 3 15IIL05 po zalaniu. Płyta główna dokładnie wyczyszczona. Po podłączeniu zasilacza pobiera ok 150mA i płyta próbuje startować - zaświeca się dioda POWER. Mam napięcia +5V, 3V i odziwo pojawia się napięci +VCCIN (na procesorze 1.8V - PL3401). Nie mam napięcia +1.8VALW (jest ok 0,25V). Po odlutowaniu zwory PJ1308 pojawia się napięcie +1.8VALW i płyta nie próbuje się odpalać - wtedy pobór ok 7mA.

brak zwarcia za PJ1308. Czyżby uszkodzony CPU?

płyta: GS454/GS554/GV450/GV550 NM-D031

Re: Lenovo IdeaPad 3 15IIL05 - NM-D031 po zalaniu nie uruchamia się

by Google Adsense [BOT] • 28 November 2023, 18:00

#3 Re: Lenovo IdeaPad 3 15IIL05 - NM-D031 po zalaniu nie uruchamia się

by domo997 • 30 November 2023, 17:23
Machine wrote:Most likely the PCH contained in the APU is faulty.
Do this test:
Do the test described here on PJ130, side without 1.8v (explained at the end of lesson 3):
post5699.html#p5699


Brak zwarcia, pobór prądu ok 100mA na PJ130
Jakieś inne pomysły? Bios programowałem i dalej to samo.

Re: Lenovo IdeaPad 3 15IIL05 - NM-D031 po zalaniu nie uruchamia się

by Google Adsense [BOT] • 30 November 2023, 17:23
 This topic is marked as ARCHIVAL. Please only reply if your message contains the solution (Terms and Conditions p. 12.1).
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