LED DRIVER KEEPS DYING

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  • osrex
    New Member
    • May 2025
    • 2
    • Egypt

    #1

    LED DRIVER KEEPS DYING

    Hello, this is my first post and im just a beginner, so be easy on me guy. thanks



    i have a LED chandeilier that switches colors from white to cool white to warm when toggling the switch, it has 24 LED arms, each arm is 30 CM length.



    i have no datasheet at all for the LED lights, all i have is its length.



    long story short, testing the chandelier on the ground, and it works fine for 1 - 2 - 6 hours, no problem.



    as soon as i fix the chandelier to the ceiling and bury the driver inside the hub, it works for 1 hour then the driver burns, and trips the breaker.



    the seller suggested its just overloaded and to split the 24 arms in 12 arms each for its own driver, and i did that, worked fine on the ground for 3 - 6 hours continuesly "well ventilated", as soon as i hanged it to ceiling again, worked for 2 hours then again, driver burnt, breaker tripped.



    im almost sure going back and forth with chatgpt, copilot & gemini, is its a driver issue, and basically its just not well ventialted, but i have no option to ventilate it.



    if this driver is wrong for this chandelier type, which would be the correct one



    please check all pictures attached for the external and internal driver components.



    https://imgur.com/a/9p6PAPM

  • CapLeaker
    Leaking Member
    • Dec 2014
    • 7976
    • Canada

    #2
    From what I see the DB307S bridge rectifier shorted out and that most certainly makes your fuse blow.
    Pulled up a datasheet and looked at the output current derating curve. At 40C it does 3 amps, but at 110C it's down to only 1A. That also goes along with that 1hr lifetime you experience. You got thermal runaway… and considering your location, things are just getting too hot up there when that PSU is mounted inside the hub. Also a quality bridge rectifier should not derate like this one does. Nothing on that board is mounted on a heatsink either. Poor design, cheap components, no cooling. Cheap as F*. It bound to go

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