• HP all in one - 22-b020na - nie włącza się

It is currently 14 December 2024, 04:27

 [SOLVED] HP all in one - 22-b020na - nie włącza się

 Forum rules: Click here to view the forum rules

  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 HP all in one - 22-b020na - nie włącza się

by tomekchr • 5 March 2024, 11:24
Cześć.
Pacjent ma na imię HP model 22-b020na płyta główna to DAN91AMB6D0 rev D Model N91A.
Po podłączeniu zasilania włącza sie na chwile wentylator i koniec. prąd podczas pracy kilkusekundowej max 0,3A. Bios przeprogramowany 2 razy, na dwóch różnych wsadach taki sam objaw, nie uruchamia się.
Pomiary cewek
PL26 1kΩ
PL27 12kΩ
PL25 125kΩ
PL20 50Ω
PL19 38Ω
PL14 100kΩ
PL9 50kΩ
PL8 160Ω
PL7 1.3kΩ
PL4 180Ω
jak macie może jakiś wsad bios mogę zaprogramować raz jeszcze (do trzech razy sztuka)

Re: HP all in one - 22-b020na - nie włącza się

by Google Adsense [BOT] • 5 March 2024, 11:24

#2 Re: HP all in one - 22-b020na - nie włącza się

by matic • 6 March 2024, 08:25
tomekchr wrote:prąd podczas pracy kilkusekundowej max 0,3A.
Hello!
Measure the voltages to ground on all coils, when the power consumption is 0.3A.

Measure the voltage to ground on pin 25 of KBC chip.

#3 Re: HP all in one - 22-b020na - nie włącza się

by tomekchr • 6 March 2024, 10:44
matic wrote:Hello!
Measure the voltages to ground on all coils, when the power consumption is 0.3A.


PL26 1kΩ 5V
PL27 12kΩ 3.3V
PL25 125kΩ 12V
PL20 50Ω 3,7V
PL19 38Ω 1V
PL14 100kΩ 19V
PL9 50kΩ 1.8V
PL8 160Ω 1V
PL7 1.3kΩ 1.3V
PL4 180Ω 1V

matic wrote:Measure the voltage to ground on pin 25 of KBC chip.


3.3V

#4 Re: HP all in one - 22-b020na - nie włącza się

by matic • 11 March 2024, 08:56
tomekchr wrote:PL20 3.7V
Is this measurement correct?

Re: HP all in one - 22-b020na - nie włącza się

by Google Adsense [BOT] • 11 March 2024, 08:56
Similar Topics
HP 8470p Nie włącza się
HP 250 G8 - nie włącza się
HP 250 G8 - nie włącza się
  HP 15-N031SG (DA0U82MB6D0 REV: D) - nie włącza się wogóle
  HP OMEN 16-c0220nm, płyta DAG3KPMBAD0 - nie włącza się, po zalaniu  [SOLVED]
Laptop Hp 15s-eq2022nw DA0P5JMB6B0 0P5J Nie włącza się po zalaniu

Who is online

Users browsing this forum: No registered users and 0 guests

_______________________________
All rights reserved. Unauthorised copying of this website's content or any of its part is strictly forbidden.
Any trademarks, brand names, products or services published on this website belong to their legal owners, are copyrighted and used for information purposes only.