Vostro 1520 UMA (LA-4596P) No LVDS (crt working)

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  • r ez a
    Member
    • Sep 2014
    • 39
    • iran
    #1

    Vostro 1520 UMA (LA-4596P) No LVDS (crt working)

    hello my friends
    i have 4 new motherboards with same problem
    crt wotking fine but there is no LVDS
    matrix turns on but its just backlight and black screen
    i tried another cpu,ram,lcd and lcd cable tested
    flashing bios not help
    another motherboard work good in this setup

    +LCDVDD= 3.3V
    LCD_TST=3.3V
    LCD_CBL_DET#=0V
    LID_SW#=3.3V

    any idea?
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