• HP envy x360 15m-eu0033dx (Mel 8L 203073-2 448.OML05.0021) - brak reakcji

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  1. Topic title should contain: the device's manufacturer, full model and the brief description of problem.
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#1 HP envy x360 15m-eu0033dx (Mel 8L 203073-2 448.OML05.0021) - brak reakcji


by ziomal92 28 October 2025, 21:55
Cześć,
Laptop HP envy x360 15m-eu0033dx z płytą Mel 8L 203073-2 448.OML05.0021. Laptop totalnie martwy, zero reakcji na przycisk power, czy ładowanie baterii (brak sygnalizacji ładowania). Przy podłączeniu zasilacza serwisowego laptop bierze 180mA i grzeje się przetwornica PU4501 3.3V (sy8386brhc). Rezystancja na dławiku 3.3V to 3 Kohmy. Brak zwarć na wyjściach przetwornicy więc uznałem, że wymienię najpierw przetwornicę. Niestety bez zmian. Płyta nadal pobiera 180mA, układ sy8386brhc ma w sekundę 100 stopni. Dodatkowo teraz grzeje się (około 40 stopni) układ D4302 (C96QH) wraz z diodą obok (5532). Nie wiem czy przed wymianą przetwornicy też się grzały te elementy, bo wtedy od razu przykuła moją uwagę właśnie przetwornica.
W dalszym ciągu brak rekcji płyty.
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Re: HP envy x360 15m-eu0033dx (Mel 8L 203073-2 448.OML05.0021) - brak reakcji


by Google Adsense [BOT] 28 October 2025, 21:55

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