• Thinkpad X13 - nie uruchamia się na zasilaczu

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#1 Thinkpad X13 - nie uruchamia się na zasilaczu


by lock99 8 January 2025, 11:38
Płyta HT4B1/HX3B0 NM-D362 Rev 4.0
Cześć
Płyta miała uszkodzone gniazdo USB-C i zwarty mosfet Q6505 oraz Q6501. Wymieniłem gniazdo USB oraz zwarte mosfety.
Gdy miałem zamontowany tylko Q6505 podpiąłem gniazdo zasilania i zasilacz przełączył na 20V, zapaliła się dioda zasilania i wydawało się, że wszystko będzie w porządku.
Po zamontowaniu drugiego mosfeta Q6501, znowu spaliły się obydwa :frustry:
Czy wszystko wskazuje na TPS65994? Niestety układ ciężko dostępny w Polsce, u mnie na płycie jest w obudowie QFN, nie BGA.
Q6501 rezystancja do masy
S2 - skacze od 11kΩ do 2MΩ
S1 - ok. 1MΩ
G2 i G1 -OL

Q6505
S2 - skacze od 11kΩ do 2MΩ
S1 - ok. 1M
G2 i G1 - OL

Re: Thinkpad X13 - nie uruchamia się na zasilaczu


by Google Adsense [BOT] 8 January 2025, 11:38

#2 Re: Thinkpad X13 - nie uruchamia się na zasilaczu


by Vogelek23 8 January 2025, 12:36
lock99 wrote:Czy wszystko wskazuje na TPS65994?
Najprawdopodobniej tak, bo to jedyna część wspólna dla obu MOSFETów.

Re: Thinkpad X13 - nie uruchamia się na zasilaczu


by Google Adsense [BOT] 8 January 2025, 12:36

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