• Lenovo x250 brak podświetlania matrycy

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Lenovo x250 brak podświetlania matrycy

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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 Lenovo x250 brak podświetlania matrycy

by Wolomo • 7 June 2023, 13:26
Model: Lenovo ThinkPad X250
Stara płyta główna
Motherboard: VIUX1 NM-A091, Rev.: 1.0

APU: Intel Core i5-5300U
KBC: SMSC MEC1633L-AUE

Hej:
Mam lenovo x250 gdzie padło podświetlanie matrycy.
W płycie głównej wymieniony bezpiecznik F7 i dalej lipa.
Nowa taśma. Nowa matryca. Ostatecznie nowa płyta główna i dalej nic. Na
innym laptopie matryca świeci. Na tym już nie. Podłączane kilka matryc.
Żadna się nie podświetla, w innych urządzeniach działają.
Proszę o pomoc :frustry:

Nowa płyta :
Motherboard: VIUX1 NM-A091, Rev.: 1.0

APU: Intel Core i7-5600U
KBC: SMSC MEC1633L-AUE

Re: Lenovo x250 brak podświetlania matrycy

by Google Adsense [BOT] • 7 June 2023, 13:26

#2 Re: Lenovo x250 brak podświetlania matrycy

by Vogelek23 • 7 June 2023, 14:08
Włącz laptopa do ustawień BIOSu i zmierz napięcia do masy na pinach:
- 13, 23, 24 i 26 złącza J10 (ekran),
- 2 i 22 złącza J11 (touchscreen).

#3 Re: Lenovo x250 brak podświetlania matrycy

by ctro • 7 June 2023, 14:16
Powinieneś wymienić bezpiecznik F1, a nie F7, on jest po drugiej stronie płyty w mało typowym dla matrycy miejscu.
Sygnal VBL.

___________
Zobacz jeszcze, czy nie masz kabla zlego kabla do matrycy z touchscreen lub wersji hd/fhd.
Wtedy też może palić bezpiecznik.

#4 Re: Lenovo x250 brak podświetlania matrycy

by Vogelek23 • 7 June 2023, 14:54
ctro wrote:Powinieneś wymienić bezpiecznik F1...
F1 to jest bezpiecznik linii zasilania dysku SATA (złącze J1) :wtf:

#5 Re: Lenovo x250 brak podświetlania matrycy

by ctro • 7 June 2023, 14:57
Faktycznie mój błąd. Poleciałem ze schematu dla x260..

#6 Re: Lenovo x250 brak podświetlania matrycy

by Wolomo • 16 January 2024, 15:24
13: 3,3v
26: 20,1v
24:0 v
23: 1.1v

Nie ma dotykowego

Re: Lenovo x250 brak podświetlania matrycy

by Google Adsense [BOT] • 16 January 2024, 15:24
 This topic is marked as ARCHIVAL. Please only reply if your message contains the solution (Terms and Conditions p. 12.1).
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