• HP 15-N031SG (DA0U82MB6D0 REV: D) - nie włącza się wogóle

It is currently 14 December 2024, 09:56

HP 15-N031SG (DA0U82MB6D0 REV: D) - nie włącza się wogóle

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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 HP 15-N031SG (DA0U82MB6D0 REV: D) - nie włącza się wogóle

by arjuredi • 12 March 2024, 12:57
Cześć.
Kompletny brak reakcji na włącznik. Poniżej podaję rezystancję i napięcia na cewkach:
PL4 - 308kΩ; 3,1V
PL10 - 36Ω; 0V
PL9 - 478Ω; 0V
PL13 - 230Ω; 0V
PL8 - 36Ω; 0V
PL15 - 111Ω; 0V
PL21 - 410Ω; 0V
PL18 - 5,24kΩ; 0V
PL17 - 15kΩ; 0V

Napięcia na PU2:
n.6 - 2,62V
n.16 - 6V
n.20 - 19V

Po przeczytaniu podobnego wątku podaję napięcia na poszczególnych pinach kbc:
n.6 - 0V
n.16 - 0V
n.37 - 3,33V
n.64 - 0,66V
n.67 - 3,35V
n.76 - 3,03V
n.95 - 0V
n.124 - 1,76V
n.127 - 3,35V
n.19 - 3,34V (przy naciśniętym włączniku spada do 0V)
n.90 - 0,06V, brak reakcji na włącznik.

Proszę o dalsze wskazówki.

Re: HP 15-N031SG (DA0U82MB6D0 REV: D) - nie włącza się wogóle

by Google Adsense [BOT] • 12 March 2024, 12:57

#3 Re: HP 15-N031SG (DA0U82MB6D0 REV: D) - nie włącza się wogóle

by arjuredi • 15 March 2024, 11:26
No, it is my service power supply.

#5 Re: HP 15-N031SG (DA0U82MB6D0 REV: D) - nie włącza się wogóle

by arjuredi • 18 March 2024, 14:31
I took original power supply from another hp but the measurments are very similiar. By the way, I have resistors soldered in the service cables for the hp and there has been no problem with them so far.

#7 Re: HP 15-N031SG (DA0U82MB6D0 REV: D) - nie włącza się wogóle

by arjuredi • 5 April 2024, 11:25
Thank you Matic for your help, but I returned the laptop to the customer, because the repair of the board included the replacement of the display and it was too expensive for the customer.

Re: HP 15-N031SG (DA0U82MB6D0 REV: D) - nie włącza się wogóle

by Google Adsense [BOT] • 5 April 2024, 11:25
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