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Harman/Kardon Onyx Bluetooth Speaker - No Power

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    Re: Harman/Kardon Onyx Bluetooth Speaker - No Power

    https://www.badcaps.net/forum/attach...8&d=1490813608
    Check the RESISTANCE between the two legs of C713 (the smallest cap of the four caps) to see what it shows. Make sure to report if the reading is in Ohm, K Ohm, or M Ohm.
    BTW, that black carbon on the board should be removed, it is conductive.
    Last edited by budm; 03-29-2017, 01:29 PM.
    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


      Re: Harman/Kardon Onyx Bluetooth Speaker - No Power

      Originally posted by budm View Post
      https://www.badcaps.net/forum/attach...8&d=1490813608
      Check the RESISTANCE between the two legs of C713 (the smallest cap of the four caps) to see what it shows. Make sure to report if the reading is in Ohm, K Ohm, or M Ohm.
      BTW, that black carbon on the board should be removed, it is conductive.
      C713 = 0.6 Ohm, but i have only usual multimeter now.

      Black carbon will be removed certainly, i have not started the repair, only wiped with alcohol.

      Comment


        Re: Harman/Kardon Onyx Bluetooth Speaker - No Power

        Well, more likely one of those 4 caps is shorted out or the IC itself. I would carefully remove hose caps one at a time to see if the shorts will go away.
        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


          Re: Harman/Kardon Onyx Bluetooth Speaker - No Power

          Harman/Kardon Onyx schematic diagram
          Attached Files

          Comment


            Re: Harman/Kardon Onyx Bluetooth Speaker - No Power

            Originally posted by army_wang View Post
            Harman/Kardon Onyx schematic diagram
            Nice! Thanks
            "Tantalum for the brave, Solid Aluminium for the wise, Wet Electrolytic for the adventurous"
            -David VanHorn

            Comment


              Re: Harman/Kardon Onyx Bluetooth Speaker - No Power

              I'm bad english . I have onyx studio no power . I checked board see D300 explosive and U700 short circuit . I have replace new D300,U700 and still not work ? Anybody help me fix this ? thank

              Comment


                Re: Harman/Kardon Onyx Bluetooth Speaker - No Power

                Are you getting 4.7v from the new U700?
                "Tantalum for the brave, Solid Aluminium for the wise, Wet Electrolytic for the adventurous"
                -David VanHorn

                Comment


                  Re: Harman/Kardon Onyx Bluetooth Speaker - No Power

                  I removed C306 and turned on ok but not charging battery . I connect apdator and remove battery and check Vbat pin is 0V

                  Comment


                    Re: Harman/Kardon Onyx Bluetooth Speaker - No Power

                    U701 is probably faulty, or C706 shorted?
                    "Tantalum for the brave, Solid Aluminium for the wise, Wet Electrolytic for the adventurous"
                    -David VanHorn

                    Comment


                      Re: Harman/Kardon Onyx Bluetooth Speaker - No Power

                      I no find replace U701 IC . You can help me new solution ? . I plan to mod a extend power stepdown module for charging battery

                      Comment


                        Re: Harman/Kardon Onyx Bluetooth Speaker - No Power

                        Finally . I modding power charging battery by LM7805 and everything is OK . But charging battery near 8 hours when battery is very low,can't to start system :P . I'm no care because I alway using power apdater,sometime i go out to use on battery . Thank a lot
                        Attached Files
                        Last edited by svipmt; 11-04-2017, 08:56 AM.

                        Comment


                          Re: Harman/Kardon Onyx Bluetooth Speaker - No Power

                          Hello everyone
                          I have the same Onyx Studio that does not turn on.
                          The BC57E687C Bluetooth chip gets warm after 1 minute with the AC adapter connected.
                          I hope youcan help me please.

                          Comment


                            Re: Harman/Kardon Onyx Bluetooth Speaker - No Power

                            Originally posted by Agent24 View Post
                            U701 is probably faulty, or C706 shorted?
                            Hi AGENT24!
                            I have an ONYX STUDIO 4. I plugged my scooter charger into it. The charger IC is burnt out. That's all it looks like visually. I would like to fix it. Unfortunately, I can't find a plan for it anywhere. Could you help me? I can't find a service manual link either.

                            Thanks in advance

                            Comment


                              Re: Harman/Kardon Onyx Bluetooth Speaker - No Power

                              Originally posted by csabikat View Post
                              Hi AGENT24!
                              I have an ONYX STUDIO 4. I plugged my scooter charger into it. The charger IC is burnt out. That's all it looks like visually. I would like to fix it. Unfortunately, I can't find a plan for it anywhere. Could you help me? I can't find a service manual link either.

                              Thanks in advance
                              Hello everyone!
                              Here is the Onyx studio 4 service manual
                              Attached Files

                              Comment

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