Baird X37DTV stobe Backlight issue

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  • jennybn
    New Member
    • Sep 2013
    • 3
    • uk
    #41
    Re: Baird X37DTV stobe Backlight issue

    i was going to reply much earlier, but i had a visitor.
    the current cap is 1500uf 16v, it should be a 1000uf 16v.

    i actually heat the set up at the 150uF 400v for the voltage to stabilise, which i presume is the primary side.

      Comment

      • baddesley
        Engineer
        • Dec 2012
        • 55
        • UK
        #42
        Re: Baird X37DTV stobe Backlight issue

        This is exactly the same problem I have with one of these; an X42DTV.

        I have replaced all of the caps in the power supply and the the two in each inverter (the only ones that were at all bulging), but it's stil the same - flickering/strobing on the screen, no sound or video, stops strobing after a while.

        The 5V and 16.5V rails are fine, the 12V rail is down at approx. 8V, but I don't think it's the PSU at fault, most likely the main board, as Wreksta says. I tried disconnecting the power to this board, but the set then fails to power up, obviously due to a necessary feedback loop.

        Anyone managed to find the actual cause, or a circuit diagram for these?

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