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  • FX Loop loud humming/Channel popping

    Hi guys I could really use some input here,



    I just got an EVH 5150 III 50 watt and it is a fantastic amp. However an issue has arisen today that is bothering me.



    I had my pedal board all setup (unchanged for over 1 year) all plugged in with a Carbon Copy in the loop. I put the amp on, waited then put in on stand by. I stomped on the footswtich from green to blue and BOOM loud popping noise. All channels are doing this.



    So I go straight into the amp with guitar, and its fine. Then I just run the pedals up front (Wah/Phaser/Flanger) no popping. Then I just run the FX Loop, no popping however when I engage the FX loop on the footswitch, Massive hum on all channels.



    I tested all the pedals up front individually no channel popping or hum

    If I put one pedal in the FX loop with no pedals up front, massive hum but no channel popping.



    I don't understand what is happening, the amp was working fine a couple weeks ago, and now all these issues? this is my current layout:



    Guitar ---Wah---Phaser---Flanger Carbon Copy in FX Loop

    all connected with DC Brick



    All advice is welcome

    EDIT: The humming is from the florescent lights in my basement; however all the pedals are hooked up and the channel popping still happens
    My Rig:
    Peavey Wolfgang Standard
    Charvel San Dimas
    EVH 5150 III 50 Watt
    EVH95 Wah
    MXR EVH Phase 90
    MXR EVH Flanger
    MXR Stereo Chorus
    MXR Carbon Copy

    Good Transactions: ZachMetal, solly

  • #2
    I haven't a clue what might be causing it circuit-wise but did you try cleaning the jacks of the FX loop? If they haven't been used in a long time there could be oxidation.
    Happy days so far with: Kayzer, Snufkino, matchpoint, SG1

    Comment


    • #3
      I haven't a clue what might be causing it circuit-wise but did you try cleaning the jacks of the FX loop? If they haven't been used in a long time there could be oxidation.
      Happy days so far with: Kayzer, Snufkino, matchpoint, SG1

      Comment


      • #4
        ^^^^^^

        Same thing I was thinkin'. If it's hasn't been used in a while probably the issue.

        Comment


        • #5
          ^^^^^^

          Same thing I was thinkin'. If it's hasn't been used in a while probably the issue.

          Comment


          • #6
            Check for a ground-loop problem. I run into that issue sometimes when I have pedals plugged into the same power source but within the loop and in front of the amp.
            : brianeharmonjr, Bro Blue, dirteye, fragocity, Gojo03, hivedestruction, hosebeast, Kano2864212, marekk, mitre, needleTOink, PumpkinPieces, sh333, SunofNothing, this1smyne, unicornwarrior

            Comment


            • #7
              Check for a ground-loop problem. I run into that issue sometimes when I have pedals plugged into the same power source but within the loop and in front of the amp.
              : brianeharmonjr, Bro Blue, dirteye, fragocity, Gojo03, hivedestruction, hosebeast, Kano2864212, marekk, mitre, needleTOink, PumpkinPieces, sh333, SunofNothing, this1smyne, unicornwarrior

              Comment


              • #8
                Well the humming was from my basement lights so the humming is out of the question



                Things I've determined:



                -Plug all the pedals in the DC Brick and run them in front of the amp, no channel popping but the pedals do pop when engaged



                -Plug all the pedals in the DC Brick and run them in the loop, no channel popping but the pedals do pop when engaged



                -If I have my Wah, Phaser and Flanger plugged into the DC brick and the Carbon Copy into the loop with a battery, no channel popping but the pedals in connected to the DC brick to pop, not loudly but it is noticeable



                Would switching to a Voodoo Lab power supply help maybe plugging all the pedals into the DC brick since it doesn't have isolated ports?
                My Rig:
                Peavey Wolfgang Standard
                Charvel San Dimas
                EVH 5150 III 50 Watt
                EVH95 Wah
                MXR EVH Phase 90
                MXR EVH Flanger
                MXR Stereo Chorus
                MXR Carbon Copy

                Good Transactions: ZachMetal, solly

                Comment


                • #9
                  Well the humming was from my basement lights so the humming is out of the question



                  Things I've determined:



                  -Plug all the pedals in the DC Brick and run them in front of the amp, no channel popping but the pedals do pop when engaged



                  -Plug all the pedals in the DC Brick and run them in the loop, no channel popping but the pedals do pop when engaged



                  -If I have my Wah, Phaser and Flanger plugged into the DC brick and the Carbon Copy into the loop with a battery, no channel popping but the pedals in connected to the DC brick to pop, not loudly but it is noticeable



                  Would switching to a Voodoo Lab power supply help maybe plugging all the pedals into the DC brick since it doesn't have isolated ports?
                  My Rig:
                  Peavey Wolfgang Standard
                  Charvel San Dimas
                  EVH 5150 III 50 Watt
                  EVH95 Wah
                  MXR EVH Phase 90
                  MXR EVH Flanger
                  MXR Stereo Chorus
                  MXR Carbon Copy

                  Good Transactions: ZachMetal, solly

                  Comment









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