• Lenovo Ideapad 310 NM-A752 Brak dźwięku

It is currently 14 March 2025, 06:56

 [SOLVED] Lenovo Ideapad 310 NM-A752 Brak dźwięku

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#1 Lenovo Ideapad 310 NM-A752 Brak dźwięku

by adrianeksor • 12 February 2025, 20:40
Lenovo Ideapad 320-15ISK
Płyta Główna NM-A752 rev:1.0
Brak reakcji na podłączenie słuchawek
Próba rozwiązania problemu przez system wyrzuca błąd 0x80070490

Uszkodzony układ CX11802-33Z bardzo się nagrzewa.
Mam u siebie nowy, jednak proszę o dokładniejszą analizę.
podaje rezystancję względem masy układu CX11802 po podmianie na nowy, bez próby uruchomienia laptopa.
Noga
2 +3,3VD - 40Ω
3 FILT_1,8V - 26KΩ
13 +5VD - 26kΩ
16+5VD -26kΩ
28+5VA -30kΩ
Rezystancja na cewkach
PL501 - 99Ω
PL202/201 -1,7MΩ
PL500 - 74Ω
PL401 - 13KΩ
PL402 - 36KΩ
PL1002 - 9Ω
PL1001 - 6Ω
PL1003 -3Ω
Ponadto zdjęte układy UVG1 i UL1 widoczne ślady nadpalenia. Laptop uruchamia się bez problemu.Image

Re: Lenovo Ideapad 310 NM-A752 Brak dźwięku

by Google Adsense [BOT] • 12 February 2025, 20:40

#2 Re: Lenovo Ideapad 310 NM-A752 Brak dźwięku  [SOLVED] 

by matic • 13 February 2025, 16:18
adrianeksor wrote:2 +3,3VD - 040,26Ω
Hello!
What does this number mean? Is it 40,26Ω or what?

adrianeksor wrote:PL1002 - 009Ω
And for example this one. Is it 9Ω or maybe 0,09Ω?

#3 Re: Lenovo Ideapad 310 NM-A752 Brak dźwięku

by adrianeksor • 13 February 2025, 20:42
Napięcia obecne na układzie UA1
2 - + 3,3 V D
3- 0vFILT
16- +5VD
18- +3,3VD
27- +3,3 AVDD
28- +5VA
29- 0 VREF
Witam Problem rozwiązany. Ponowne przelutowanie nowo osadzonego układu, pomogło. Dźwięk powrócił . Dziękuje za wskazówki co do przedstawiania pomiarów, muszę nad tym popracować. Jeszcze raz dziękuje i pozdrawiam.

Re: Lenovo Ideapad 310 NM-A752 Brak dźwięku

by Google Adsense [BOT] • 13 February 2025, 20:42
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