• Dell P71G LA-D781P REV: 1.0 laptop sie uruchamia na chwile

It is currently 9 March 2025, 16:14

Dell P71G LA-D781P REV: 1.0 laptop sie uruchamia na chwile

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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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#1 Dell P71G LA-D781P REV: 1.0 laptop sie uruchamia na chwile

by Yamaiko • 3 February 2025, 20:34
Witam :)
Laptop uruchamia się na 15 sekund - świeci dioda led po włączeniu przyciskiem i gaśnie. Napięcia takie jak:
+3VALW_DSW
+5VALW
+3VALW
+3VLP
Pojawiają się

Napięcie +3V_PCH wynosi 1.6V .Układ U36 zasilany jest prawidłowo napięciem 3,38V, czyżby ten układ nieprawidłowo pracował czy cos przegapiłem jeszcze ? Napięcie +3V_PCH zasila SPI

PCH_PWR_EN - 0V
SIO_SLP_SUS# - 0V

ps zauważyłem ze kwarc jest uszkodzony
Image

Po przylutowaniu kwarcu testowego z innej płyty wszystkie napięcia startuja oprócz CPU. Dioda miga 2 razy w kolorze amber i raz white, czasem zdarzyło się 5 razy white 3 razy amber. Czasem odpala tak samo jak przed naprawą czyli na 15s white LED i gaśnie.

Re: Dell P71G LA-D781P REV: 1.0 laptop sie uruchamia na chwile

by Google Adsense [BOT] • 3 February 2025, 20:34
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