LG 65UQ8000AUB no backlight burning smell

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  • howardc64
    Badcaps Veteran
    • Jun 2017
    • 632
    • United States
    #1

    LG 65UQ8000AUB no backlight burning smell

    Only 3 years old. Owner said backlight went out and burning smell. Didn't bother plugging in to check if had power LED. Just opened the TV rear and found shorted bridge rectifier diode on the backlight circuit on the PSU. SF26G (400V 2A super fast recovery rectifier link ) diode replace with SF26 (what I had on hand) Google AI said G = Green Components.

    Burn looked pretty bad on the board but just was blackened carbon coating material. Scraped and cleaned off quite well and clean solder pad for the new diode.


    Click image for larger version Name: IMG_4337.jpg Views: 1 Size: 4.00 MB ID: 3654589 Click image for larger version Name: IMG_4338.jpg Views: 3 Size: 3.98 MB ID: 3654592 Click image for larger version Name: IMG_4341.jpg Views: 1 Size: 2.85 MB ID: 3654588 Click image for larger version Name: IMG_4342.jpg Views: 1 Size: 2.32 MB ID: 3654593
    Last edited by howardc64; 06-07-2025, 11:10 PM.
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