• Dell 5591 włącza się na kilka sekund

It is currently 2 February 2026, 16:27

Dell 5591 włącza się na kilka sekund

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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 Dell 5591 włącza się na kilka sekund

by przemekzn • 2 February 2026, 12:34
Witam, mam do naprawy laptopa Dell 5591 z płytą główną la-f721p, laptop uruchamia sie na kilka sekund wentylatory kręcą się z maksymalną prędkością i się wyłącza po około 3 sekundach.

Były uszkodzenia na płycie i te elementy wymieniłem. Niestety bez poprawy.

Image

Rezystancja na cewkach (napięcia podane przy próbie uruchomienia laptopa)
Pl1400 1.07kΩ 1.34v
Pl1601 23.3kΩ 1.05v
Pl301 61.5Ω 1.04v
Pl100 29kΩ 3.39v
Pl201 253.9Ω 1.2v
Pl902 44.85kΩ 13.48v
Pl2000 12Ω 0v
Pl101 65kΩ 5.1v
Pl2001 37Ω 1.05v
Pl1901 pl1900 pl1803 pl1802 5Ω 1.01v

Re: Dell 5591 włącza się na kilka sekund

by Google Adsense [BOT] • 2 February 2026, 12:34
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