• HP 250 G8 - nie włącza się

It is currently 14 December 2024, 02:32

HP 250 G8 - nie włącza się

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#1 HP 250 G8 - nie włącza się

by arjuredi • 21 February 2024, 15:18
Cześć.
Oznaczenia z płyty FPW50 LA-H325P rev: 1.0. Pobór prądu po wciśnięciu włącznika ok. 0,08A, biała dioda na płycie zaświeca się. Przeprogramowałem bios + ec, ram podmieniłem - bez zmian. Poniżej napięcia i rezystancja na poszczególnych cewkach z prośbą o dalsze wskazówki:
PLM1 - 0V; 50Ω
PLZ14 - 1,06V; 64Ω
PLG13 - 0V; 56Ω
PLH1 - 1,06V; 210Ω
PL301 - 5,15V; 76kΩ
PL302 - 3,36V; 29,4kΩ
PLB1 - 3,12V; 5,2MΩ.

Re: HP 250 G8 - nie włącza się

by Google Adsense [BOT] • 21 February 2024, 15:18

#2 Re: HP 250 G8 - nie włącza się

by xamledyD • 22 February 2024, 10:43
Witam.
Podmieniałeś KBC? Czy BIOS i KBC było programowane wsadem wyodrębnionym ze strony wsparcia HP?
Czy laptop nie był zalany?
Masz dostęp do termowizji? Przy poborze 80 mA powinna wskazać element na którym możnaby skupić uwagę pod kątem szukania przyczyny usterki.
Pozdrawiam

#3 Re: HP 250 G8 - nie włącza się

by arjuredi • 22 February 2024, 12:47
Kbc nie podmieniłem, tylko przeprogramowałem, termowizji brak.

#4 Re: HP 250 G8 - nie włącza się

by matic • 23 February 2024, 08:29
arjuredi wrote:PLM1 - 0V; 50Ω
Hello!
Is this resistance measurement correct?
Have you measured this resistance with the RAM memory disconnected from the board?

#5 Re: HP 250 G8 - nie włącza się

by arjuredi • 4 March 2024, 14:05
50Ω this is resistance measured with ram module, without it the resistance is 2,44kΩ.

#6 Re: HP 250 G8 - nie włącza się

by matic • 4 March 2024, 15:44
These resistance measurements are strange.
Please, remeasure the resistance with and without RAM with reversed polarity of test leads.

#7 Re: HP 250 G8 - nie włącza się

by arjuredi • 5 March 2024, 17:56
Normal polarity of test leads: 54Ω with and 2,45kΩ without the ram module, reverse polarity of test leads: 46Ω with and 2,41kΩ without the ram module

#8 Re: HP 250 G8 - nie włącza się

by matic • 6 March 2024, 07:51
The resistance with RAM memory seems too low and resistance without it seems too high.
Please, check your measurements with another meter.

 This topic is marked as ARCHIVAL. Please only reply if your message contains the solution (Terms and Conditions p. 12.1).
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