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Behringer eurodesk mx3282a external power supply not switching on

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  • Behringer eurodesk mx3282a external power supply not switching on

    Hi I am new to these forums and am at my wits end, I have a Behringer eurodesk mx3282a, and the external power supply will not power on. Is there any reason as to why this could be?

    It would be good if there was a diagram I could use for the power supply but can not find one anywhere.

    Any help would be appreciated, sorry if this is the wrong place to post.

  • #2
    With the power supply OFF and the supply drained, you may want to try looking for a faulty diode.
    Or an open copper trace, bad solder connection.
    I agree, it would be convenient to have a schematic & a board layout.
    Alas, none are available. (that I know of).
    It really is an easy circuit.
    Follow the line connector in to the board.
    (With the unit OFF)
    It hits four diodes.
    Check them for opens or shorts.
    Last edited by Jazz P Bass; 02-07-2012, 05:45 PM. Reason: spelling

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    • #3
      The power supply unit itself seems dead? Or the power lights on the mixer won;t come on?

      If the power supply itself seems dead, go inside, it has to be pretty basic a problem. Fuses, dead switches, wires off.
      Education is what you're left with after you have forgotten what you have learned.

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      • #4
        You can test the outputs of the power supply with it not connected to the mixer.
        Its a fairly basic power supply.
        Hopefully this will help you.
        Attached Files

        Comment


        • #5
          Behringer EuroDesk Power Supply Schematic

          Hey, thanks, Mozwell.
          I went to save the file & I already had it.
          Duh.
          I even have just the power supply schematic.
          Sorry OP.
          It is "out there".
          Attached Files

          Comment


          • #6
            Assuming your power switch is good, it's a good possibility that you have an open power transformer if you have NO voltages. There IS a slim possibility that you have all cooked regulators as well. We've repaired hundreds of those and really, there's not much else that can go wrong. Power switch > transformer > single-stage regulators. as simple as it gets. Check the PCB for soldering issues as well.
            John R. Frondelli
            dBm Pro Audio Services, New York, NY

            "Mediocre is the new 'Good' "

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            • #7
              many thk mozwell & jazz p bass.... cool...

              Comment


              • #8
                Sorry, what

                I'm surprized, thanks!

                Comment


                • #9
                  Hi,

                  I've got problem with my power supply but i don't succeed to download your attached files.

                  Could you send it

                  Tahnk's

                  Sebastien TAYLOR

                  Comment


                  • #10
                    Nickb has the MX3282 schematics here:

                    Guitar Amplifier Schematics and more
                    Education is what you're left with after you have forgotten what you have learned.

                    Comment


                    • #11
                      Here is the power supply schematic.
                      Rev C & Rev F.
                      Attached Files

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                      • #12
                        Nickb's copy includes supply.
                        Education is what you're left with after you have forgotten what you have learned.

                        Comment

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