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    Sony Vaio TZ LED Backlight problem

    Discussion in 'VAIO / Sony' started by whizkidd, May 3, 2008.

  1. whizkidd

    whizkidd Notebook Enthusiast

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    I have recently performed a motherboard change on my TZ21 because it was cracked! After the change over, the LED backlight no longer works. I am 100% sure it worked before the change over but now all I get is a dark screen. The new motherboard is working as you can see the bios and op system loading on the dark screen.

    It was a straight forward mobo change nothing more. I just can't figure what has gone wrong.

    I will appreciate any suggestions or a pointer towards something I may have missed.
     
    whizkidd, May 3, 2008
    #1
  2. scottyinco

    scottyinco Notebook Evangelist

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    most likely a loose connector where the lcd plugs into the motherboard.
     
    scottyinco, May 3, 2008
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  3. Babydarklord

    Babydarklord Notebook Evangelist

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    connection on lCD backlight most likely correct.
     
    Babydarklord, May 4, 2008
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  4. whizkidd

    whizkidd Notebook Enthusiast

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    I've checked the LCD to mobo connector...It's making proper contact. Does anyone know if the screen supports an inverter like convensional non LCD backlit displays?
     
    whizkidd, May 4, 2008
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  5. ngvuanh

    ngvuanh Notebook Deity

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    Your LCD back lights has no problem, but the motherboard. LED back lights get power right from the connector. You got the new motherboard with the problem that the power supply to backlight was failed.
     
    ngvuanh, May 4, 2008
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  6. whizkidd

    whizkidd Notebook Enthusiast

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    Is there any way of checking the the back light power supply on the motherboard?
     
    whizkidd, May 6, 2008
    #6