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Behringer DDX3216 problems

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  • Behringer DDX3216 problems

    Hi

    I have a problem with the DDX 3216 is not working any moving fader.


    The DDX3216 works in full, stores all the parameters are edited, but does not move the faders and the sound is perfect


    When I move the faders manually, the display includes the movement. The memories that I edit, making the actual fader position when stored, but do recall, the display changes to show the position they have at the moment

    I've checked visually power supply and shows no swelling or burst capacitor

    Tensions are correct as indicated on the circuit board silkscreen

    Checking circuit motor control board, I noticed the three IC12, IC15 and IC13 heated in excess, can not have much time because it burns your finger on. These are 74HC595 IC

    If you experience with this fault I appreciate your help

    Dispose of schematics diagram of the DDX 3216. It also has the technical means for any test.

    P.D. excuse my bad English, I'm from Spain

    Best regards

  • #2
    Check the power supply to those ICs, is it correct voltage? Wrong voltage could damage the ICs.

    ICs that are too hot to touch are bad and should be replaced.

    GO through the row of motors. Are any of the motors showing short circuits? A shorted motor could be shorted terminal to terminal or from either terminal to ground. You can test the motors, disconnect them from the control circuitry, and touch a 9v battery to the motor leads momentarily. If the motor spins, it is probably OK.

    With proper voltage, new ICs, and no shorted motors, power back up and see if it works.
    Education is what you're left with after you have forgotten what you have learned.

    Comment


    • #3
      Thanks for your answer

      The voltage of these ICs are checked and shows 5 v.

      I will check the engines if they were derived or shorted

      I check the driver transistors that control the motors and they are correct

      It only remains to replace the 74HC595 and check results


      Now I will tell you

      Best regards

      Comment


      • #4
        Hi,
        I would love a copy of the schematic if possible.
        Thanks

        Comment


        • #5
          try here : Index of /ddx3216

          in " Schemas3216 " you'll find all I have found

          Comment


          • #6
            @choe62
            hi, i have your same problem..
            did you solve it? If yes, how?
            In my ddx3216 fader doesn't work like your problem but the fan doesn't work too....
            There's a problem on the power supply?

            Comment


            • #7
              Originally posted by Protoxide View Post
              In my ddx3216 fader doesn't work like your problem but the fan doesn't work too....
              You have an 8v rail missing for the motor drive,also supplies the fan.

              Originally posted by Protoxide View Post
              There's a problem on the power supply?
              Yes the PSU needs to be serviced/repaired.........look in the other DDX3216 thread

              Comment


              • #8
                I am in the middle of recapping the DDX3216 PSU. My unit was working, but reading about all the problems related to PSU I decided to go proactive on the issue. You can read about my progess at

                PLZILandia v5.0 - Recapping DDX3216

                I've got the schematics as well.

                PLZILandia v5.0 - DDX3216

                Comment


                • #9
                  PS Problems

                  Originally posted by PLZI View Post
                  I am in the middle of recapping the DDX3216 PSU. My unit was working, but reading about all the problems related to PSU I decided to go proactive on the issue. You can read about my progess at

                  PLZILandia v5.0 - Recapping DDX3216

                  I've got the schematics as well.

                  PLZILandia v5.0 - DDX3216
                  These links no longer work. Can someone repost them. Please

                  Comment


                  • #10
                    Have a read through this thread first......
                    http://music-electronics-forum.com/t24165/

                    Comment

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