• HP Pavilion 15 DAG35AMB8E0 REV E - nie uruchamia się

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#1 HP Pavilion 15 DAG35AMB8E0 REV E - nie uruchamia się


by Yamaiko 19 January 2024, 16:32
Witam, problem dotyczy nie włączającego się HP. Układ kbc reaguje na włącznik, świeci się dioda zasilania, laptop przy ładowaniu baterii pobiera 2A. Rezystancja na cewkach 5v/3.3V wysoka brak zwarcia względem masy, mam wrażenie, że na krótko przy zasilaniu wstają ale od razu napięcia znikają (pojawia się 0.5V na cewce 5VS5). Płyta pobiera 4mA a przy naciśnięciu przycisku power 8mA. Jedyna poszlaka jaka znalazłem to układ AOZ2261QI-18 napięcia +1V_DEEP_SUS , +VCCSTPLL, która ma wypaloną małą dziurę w obudowie i na tej linii za cewką bez układu z dziura rezystancja wynosi około 60Ohm względem masy. Kość bios nie jest zasilana przez brak napięcia 3VS5. Jakiś powód czemu nie startuje ta linia 3VS5 ? Przeciążenie czy kbc ?

Re: HP Pavilion 15 DAG35AMB8E0 REV E - nie uruchamia się


by Google Adsense [BOT] 19 January 2024, 16:32

#2 Re: HP Omen 15 DAG35AMB8E0 REV E - nie uruchamia się


by Vogelek23 19 January 2024, 17:57
Jeśli układ PU6001 ma dziurę, to przed jakąkolwiek dalszą diagnostyką należy go wymienić na nowy. Może być on przyczyną braku uruchamiania pozostałych przetwornic - zwłaszcza, że jest zasilany m.in. z linii +5VS5.

#3 Re: HP Pavilion 15 DAG35AMB8E0 REV E - nie uruchamia się


by Yamaiko 6 February 2024, 22:39
Dalej jest to samo po wlutowaniu nowej przetwornicy. Reakcja ta sama brak napięć 3VS5 i 5VS5.

#5 Re: HP Pavilion 15 DAG35AMB8E0 REV E - nie uruchamia się


by Yamaiko 7 February 2024, 18:33
PU2002:
Pin1:0
Pin2:0
Pin5:3.3V
Pin6:2.87V
Pin7:5.12V
Pin8:19.4V

PU2001:
Pin1:0
Pin2:0
Pin5:3.37V
Pin6:2.95V
Pin7:4.44V
Pin8:19.4

#7 Re: HP Pavilion 15 DAG35AMB8E0 REV E - nie uruchamia się


by Yamaiko 10 February 2024, 21:09
PU2001:
Pin1:0V
Pin2:0V
PU2002:
Pin1:0V
Pin1:0V

After pressing start button

#8 Re: HP Pavilion 15 DAG35AMB8E0 REV E - nie uruchamia się


by Machine 12 February 2024, 08:24
Is the RTC battery charged?
Measurements taken after pressing the power on button.
Measure the voltages on pins 12, 18, 19, 26, 48, 67, 88, 89, 90, 97, 100, 119, 128 of KBC.
Measure the voltages on pins 21, 107 of the KBC in the following cases:
to power OFF
with power on pressed
to power "ON".

#9 Re: HP Pavilion 15 DAG35AMB8E0 REV E - nie uruchamia się


by Yamaiko 13 February 2024, 23:44
Pin12 - 1.9V
Pin18 - 0V
Pin19 - 0V
Pin26 - 3.38V
Pin48 - 0V
Pin67 - 0V
Pin88 - 0V
Pin89 - 0V
Pin90 - 0V
Pin97 - 3V
Pin100 - 0V
Pin119 - 0V
Pin128 - 3.37V after 2s 0V

Pin107- 3.37V
with power on pressed 0.31V
Pin21 - 0V
with power on pressed 0V

#11 Re: HP Pavilion 15 DAG35AMB8E0 REV E - nie uruchamia się


by Yamaiko 15 February 2024, 13:22
RTC battery is 3V over. I power the laptop with a KORAD 5A max laboratory power supply. I wonder if this is not the reason that the laptop needs 6.15A. The SPI memory has no power 3V, so it's probably not a BIOS problem.

Re: HP Pavilion 15 DAG35AMB8E0 REV E - nie uruchamia się


by Google Adsense [BOT] 15 February 2024, 16:39
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