• Lenovo Ideapad 330-17ICH Płyta NM-B671 - brak zasilania

It is currently 30 September 2025, 09:46

 [SOLVED] Lenovo Ideapad 330-17ICH Płyta NM-B671 - brak zasilania

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#1 Lenovo Ideapad 330-17ICH Płyta NM-B671 - brak zasilania

by kolikolikoli • 20 August 2025, 13:36
Dzień dobry. Mam problem z płytą nm-b671.

Pobór płyty 0A, brak napięcia na rezystorze pomiarowym.

Charger został wymieniony, bez zmian.

Podaję napięcia na BQ24780s
1. 0v
2. 0v
3. 0v
4. 0v
5. 0v
6. 2,93v
7. 0v
8. 0v
9. 0v
10. 0v
11. 0v
12. 0v
13. 0,3v
14. 0v
15. 0v
16. 0v
17. 0,14v
18. 0,14v
19.0,14v
20.0,14v
21. 0v
22. 0v
23. 0v
24. 6,06v
25. 5,73v
26. 0,14
27. 0,14v
28. 20,5v

inne pomiary:
PR302 4,7ohm
PR310, 311: 4,02kohm
pr301: 0,01ohm
brak zwarcia do gnd na pr301

PQ311
s-0v, g-0v, d-20,5v

PQ312- brak napięć

Re: Lenovo Ideapad 330-17ICH Płyta NM-B671 - brak zasilania

by Google Adsense [BOT] • 20 August 2025, 13:36

#3 Re: mn-b671 brak zasilania

by kolikolikoli • 20 August 2025, 15:42
@Machine hmmm dziwne. PU301 już wymieniałem, zamówiłem 5 sztuk od Kittech. Pierwszy miał nadruk odwrócony o 90 stopni i powodował zwarcie na 23 nodze, wlutowałem ponownie po obróceniu i objaw taki jak na początku. Wlutowałem więc druki i objaw ten sam. Po przeczytaniu posta wlutowałem trzeci i działa.

Czyżby jakieś wadliwe układy?

#5 Re: Lenovo Ideapad 330-17ICH Płyta NM-B671 - brak zasilania

by kolikolikoli • 26 August 2025, 08:11
Tak, wszystko działa.

Re: Lenovo Ideapad 330-17ICH Płyta NM-B671 - brak zasilania

by Google Adsense [BOT] • 26 August 2025, 08:11
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