• HP ProBook 445 G7 dioda LED na przycisku zasilania miga

It is currently 2 November 2025, 00:49

HP ProBook 445 G7 dioda LED na przycisku zasilania miga

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#1 HP ProBook 445 G7 dioda LED na przycisku zasilania miga

by Anatoliy • 25 October 2025, 18:00
HP ProBook 445 G7 DA0X9MMB8F0 REV:F (Quanta X9M)
Po włączeniu zasilania dioda LED na przycisku zasilania miga (pulsuje). Napięcie na płycie wynosi 5V, 3,3 V. Napięcie 1,8 V pojawia się po sekundzie i znika.
Napięcie na przycisku zasilania wynosi 2,4 V, bateria BIOS-u rozładowała się do zera, BIOS został wgrany, ale nie nastąpiły żadne zmiany. Możliwe, że ktoś miał taką usterkę.

Re: HP ProBook 445 G7 dioda LED na przycisku zasilania miga

by Google Adsense [BOT] • 25 October 2025, 18:00

#2 Re: HP ProBook 445 G7 dioda LED na przycisku zasilania miga

by Vogelek23 • 27 October 2025, 17:36
Proszę zmierzyć rezystancje do masy na cewkach wszystkich przetwornic po odłączeniu zasilania (bateria i zasilacz) oraz odczekaniu 1-2 minut na rozładowanie się pojemności.

#3 Re: HP ProBook 445 G7 dioda LED na przycisku zasilania miga

by Anatoliy • 28 October 2025, 13:11
Image

#4 Re: HP ProBook 445 G7 dioda LED na przycisku zasilania miga

by Vogelek23 • 28 October 2025, 16:39
Na cewce 1R5, na której masz napięcie 3,3V, jest zbyt niska rezystancja do masy. Odlutuj cewkę od strony gniazda DDR4 i zmierz ponownie rezystancję do masy na obu padach tej cewki (od strony sterownika na pinie cewki oraz od strony gniazda DDR4 na PCB).

#5 Re: HP ProBook 445 G7 dioda LED na przycisku zasilania miga

by Anatoliy • 28 October 2025, 23:22
mój błąd -3.3v-31.4 кОм

Re: HP ProBook 445 G7 dioda LED na przycisku zasilania miga

by Google Adsense [BOT] • 28 October 2025, 23:22
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