Sony KD-55X8500F service manual BL-on signal

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  • kramer826
    New Member
    • May 2017
    • 4
    • australia
    #1

    Sony KD-55X8500F service manual BL-on signal

    Hello , I am looking for a service manual or schematic information to find out where to measure BL-on signal backlight on signal from the mainboard.
    I have a tv which works fine and a spare main board that Ii am trying to fault find that is not turning the backlight on,6 flashes.
    The backlights work ok with other main board.
    Thankyou for any information
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