• Lenovo T14 płyta NM-C931 brak obrazu

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#1 Lenovo T14 płyta NM-C931 brak obrazu


by dggn 15 May 2025, 14:44
Laptop jak w temacie. Brak obrazu i brak napięcia na cewce PL1002. Według schematu to wartość VCCGFXCORE_I. Bateryjka CMOS wyjęta. Może ktoś miał podobny problem i nakieruje co sprawdzić ?

Re: Lenovo T14 płyta NM-C931 brak obrazu


by Google Adsense [BOT] 15 May 2025, 14:44

#3 Re: Lenovo T14 płyta NM-C931 brak obrazu


by dggn 19 May 2025, 10:37
Tak reszta cewek ma napięcia. Pobór prądu 722mA płyta włączona, 22mA płyta wyłączona. A poniżej wartości napięć i rezystancji wszystkich cewek

PL0401 5.31V
PL0201 9.30V
PL0501 3.3V
PL301 5.1V
PL1201 1.2V
PL1301 1V
PL1002 0V
PL0902 0.8V
PL0904 0.8V
PL0903 9.2V
PL0909 0.8V
PL1102 1V
PL1502 0.8V
PL1501 0.8V
PL1601 1.3V
L5602 0.9V

PL0401 86kΩ
PL0201 0,6MΩ
PL0501 5,2kΩ
PL301 114kΩ
PL1201 151kΩ
PL1301 54Ω
PL1002 6,7Ω
PL0902 4,3Ω
PL0904 4,1Ω
PL0903 16MΩ
PL0909 5,3Ω
PL1102 16,9Ω
PL1502 5,6Ω
PL1501 4,8Ω
PL1601 604Ω
L5602 0,95kΩ

Re: Lenovo T14 płyta NM-C931 brak obrazu


by Google Adsense [BOT] 19 May 2025, 10:37

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