LED Lighting Controller - Bad Capacitor? I think?

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  • luis84
    New Member
    • Jun 2011
    • 2
    #1

    LED Lighting Controller - Bad Capacitor? I think?

    Hello everyone,

    I work on electronics but am probably not the best at identifying things. I have an LED lighting unit which is controlled by the board show in the photos.

    This board connects two switches, a charging port and a series of batteries to a 60 LED array.

    The "capacitor" that appears to be bad is located between what I have determined to be the charging port and the power switch.

    Is this a capacitor? Can I just replace it? I am not sure what voltage, etc? I am not sure on this. Any help would be appreciated in identifying what it is (if it's a cap) and how to proceed.

    This is the "capacitor" i think is bad (right one with thin red outline i put):


    This is the backside of the board... you can see it created a darkened spot....
    Tags: None
    • Rob Northen
      Senior Member
      • Jan 2010
      • 137
      • Denmark
      #2
      Re: LED Lighting Controller - Bad Capacitor? I think?

      Those are resistors and they both look burned. Unless you have a schematic, its har to tell the value of them

        Comment

        • luis84
          New Member
          • Jun 2011
          • 2
          #3
          Re: LED Lighting Controller - Bad Capacitor? I think?

          Rob Northern thank you. I have no schematic of this device. Is there any other way to identify them or to replace them? :-(

            Comment

            • lti
              Badcaps Legend
              • May 2011
              • 2545
              • United States
              #4
              Re: LED Lighting Controller - Bad Capacitor? I think?

              If you have an identical board that works properly, you can get the resistor values from it.

                Comment

                • jetadm123
                  Badcaps Legend
                  • Feb 2010
                  • 2169
                  #5
                  Re: LED Lighting Controller - Bad Capacitor? I think?

                  Maybe if you supplied a make/model number of the unit, it might jar someone's memory. Unusual that there is no silk screening on the board itself to identify the indiviual components.

                    Comment

                    • Evil Lurker
                      Warranty Voider
                      • Feb 2011
                      • 454
                      #6
                      Re: LED Lighting Controller - Bad Capacitor? I think?

                      Its been my experience that when you run across fried resistors on any sort of lighting control board there is a 90% chance that you also have blown transistors.

                        Comment

                        • Longbow
                          Badcaps Veteran
                          • Jun 2011
                          • 623
                          • USA
                          #7
                          Re: LED Lighting Controller - Bad Capacitor? I think?

                          From your description, this circuit must be a battery charger, but more info might be good. First determine what function the board is likely to have. It may be a charger. Or, it might be an led dimming circuit. Either function requires that power be switched on and off. The 2 black things with 3 legs are transistors or FET's and almost certainly shorted. Take it from there.
                          Is it plugged in?

                            Comment

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