42LG50 no backlight

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  • budm
    Badcaps Legend
    • Feb 2010
    • 40746
    • USA
    #101
    Re: 42LG50 no backlight

    Nice work, I replaced these black fuses more than I can count with two hands, I use PICOII Axial lead fuses, none of the TV have come back after three years or more. You can easily measure the current draw using your DMM, if you have peak-hold, you will see the start up current is real close to the fuse rating which does not have any headroom at all.
    Never stop learning
    Basic LCD TV and Monitor troubleshooting guides.
    http://www.badcaps.net/forum/showthr...956#post305956

    Voltage Regulator (LDO) testing:
    http://www.badcaps.net/forum/showthr...999#post300999

    Inverter testing using old CFL:
    http://www.badcaps.net/forum/showthr...er+testing+cfl

    Tear down pictures : Hit the ">" Show Albums and stories" on the left side
    http://s807.photobucket.com/user/budm/library/

    TV Factory reset codes listing:
    http://www.badcaps.net/forum/showthread.php?t=24809

      Comment

      • Edm
        New Member
        • Mar 2013
        • 1
        • USA
        #102
        Re: 42LG50 no backlight

        Hi, I have this same tv and the same black fuse was burnt as mentioned here for other people.

        I replaced the fuse and now instead of no back light, it simply lights up for a few seconds but will not stay on.

        Does anyone have any idea what would cause it to not stay lit?

          Comment

          • Seven5555
            New Member
            • Dec 2015
            • 1
            • United States
            #103
            Re: 42LG50 no backlight

            Mine also has the same bad fuse and now it turns on for a second and the shuts off. Does anyone have a suggestion on what to test next?

              Comment

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