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weird led problem


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  1. #1
    Corvette Reefer - Reefkeeper CR Member
    Join Date
    Nov 2009
    Location
    Dexter, Michigan
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    421

    Default weird led problem

    So i noticed my led system was not on last night and i felt around on the wires one felt kinda loose so i thought it was that, but then this morning i took the whole light off and disected the light for problems and all the wires were solid, and checked the leds with battery and every signle one works, so i plugged it in again and saw that the leds are just barely light that u can see there on, but with the battery connected to them they look fine. so im figureing the driver went bad, but not sure becuase the leds still light up parcially so im thinking it still works but idk. The driver is in the fixture tho, so possibley it was the humidity from the tank, but not the heat i have checked how hot it gets after running all day and is fine to the touch to hold.

    What do you guys think the problem is and from what and what can i do to pervent it from happening again? Also the driver is a meanwell.
    The names Vette, Corvette. . .

  2. #2
    rmalone - Reefkeeper CR Member
    Join Date
    May 2010
    Location
    grand blanc, mi
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    388

    Default

    How about voltage on the power supply?

  3. #3
    Corvette Reefer - Reefkeeper CR Member
    Join Date
    Nov 2009
    Location
    Dexter, Michigan
    Posts
    421

    Default

    its a 48 volt
    The names Vette, Corvette. . .

  4. #4
    CR Member
    Join Date
    Aug 2010
    Location
    clarkston
    Posts
    293
    First Name
    mike

    Default

    Well I know for certain that if a meanwell overheat it will blink the LEDs. I have seen when one led goes out some will light up and some will not. The best way is with a dmm that has a diode setting!


    Sent from my iPhone using Tapatalk

  5. #5
    rmalone - Reefkeeper CR Member
    Join Date
    May 2010
    Location
    grand blanc, mi
    Posts
    388

    Default

    You make it sound like your sort of running half power on the led's, if you have a 48v power supply check to make sure that your getting 48v to the driver. It kind of sounds like your just not getting proper voltage to the led's, kind of like turning the power down to .5. I'm not sure how your set up but with dc you tend to control power via voltage, so if you want full power you would give it 48v half power 24v, etc. it really sounds like your just not getting the full 48v. I'm not real solid on this stuff so take it all with a grain of salt. It's too bad Evil66 isn't around he could solve this in a heartbeat.

  6. #6
    Corvette Reefer - Reefkeeper CR Member
    Join Date
    Nov 2009
    Location
    Dexter, Michigan
    Posts
    421

    Default

    Yeah i really dont know, the driver is a constant current ac to dc no dimming, Mean Well LPC-35-700 constant current driver it seems like its running at more quarter then even half power.
    The names Vette, Corvette. . .

  7. #7
    jolson10450 - Reefkeeper
    Join Date
    Feb 2010
    Location
    Flat Rock
    Posts
    2,032
    First Name
    Justin
    Awards Grow Out King Monthly Giveaway Winner Monthly Giveaway Winner

    Default

    sounds like a grounding issue with an LED through the heatsink causing stray voltage running through the heatsink. if im not mistaken it will act like a resistor and cause a substantial voltage drop. use a multimeter to check the ensure the power supply is fine and if it is then this is probably the problem. I am still learning a lot about these things so im not 100%

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