• MSI MS-1781 - brak obrazu na matrycy MS17811

It is currently 14 October 2025, 03:56

MSI MS-1781 - brak obrazu na matrycy MS17811

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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.
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#1 MSI MS-1781 - brak obrazu na matrycy MS17811

by Nox2 • 8 October 2025, 11:53
Witam, laptop jak w temacie. Brak obrazu na matrycy jak i zewnętrznym ekranie. Biosy ze strony MSI wgrane, zrobiłem reflow GPU oraz podgrzane CPU i PCH. Laptop odpala na na1.4A po czym się restartuje i zostaje na 0,83A. Po kilku min się wyłączy. Wszystkie układy się nagrzewają - w normie.
poniżej pomiary.

PL1 -1,5V; 6,7kΩ
PL2 - 1,06V; 124Ω
PL4 - 3,39V;2,3kΩ
PL6 - 1,78V; 19Ω
PL7 - 1,78V; 19Ω
PL8 -1,78V; 19Ω
PL9 - 1,37V; 161Ω
PL10 - 5,03V; kΩ
PL11 - 5,03V; 27kΩ
PL12 - 5,03V; 27kΩ
PL13 - 5,11V; 22,5kΩ
PL14 - 3,4V; 1,4kΩ
CHOKE3 - 5.08V; 118kΩ
Pozdrawiam

Re: MSI MS-1781 - brak obrazu na matrycy MS17811

by Google Adsense [BOT] • 8 October 2025, 11:53

#2 Re: MSI MS-1781 - brak obrazu na matrycy MS17811

by Vogelek23 • 8 October 2025, 13:02
Nox2 wrote:zrobiłem reflow GPU oraz podgrzane CPU i PCH
Po napięciu VCORE na cewkach PL6-PL8 oraz poborze prądu widać, że nie startuje procedura POST, więc GPU na tym etapie diagnostyki w ogóle nie powinieneś ruszać. Czy po wyjęciu RAM zachowanie płyty jest takie samo?

#3 Re: MSI MS-1781 - brak obrazu na matrycy MS17811

by Nox2 • 8 October 2025, 16:24
Bez RAMu startuje od razu na równe 0,8A

Re: MSI MS-1781 - brak obrazu na matrycy MS17811

by Google Adsense [BOT] • 8 October 2025, 16:24
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