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MOD Verb Deluxe Reverb kit mechanical switch click

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  • MOD Verb Deluxe Reverb kit mechanical switch click

    Recently built a MOD Verb Deluxe Reverb Kit which has been working fine. However im trying to get rid of the click noise whenever i step on the pedal. I tried adding a 1M resistor to thr output jack but had no luck. Any other solution to this?
    Attached Files

  • #2
    Picture attached
    Attached Files

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    • #3
      please post schematic or link to kit documentation
      Originally posted by Enzo
      I have a sign in my shop that says, "Never think up reasons not to check something."


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      • #4
        verb_deluxe_schematic.pdf the_verb_deluxe_k-915_instructions_1 (1).pdf

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        • #5
          Click image for larger version

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          • #6
            Try this. Rewire the switch with a 10uF electrolytic cap cap in series with the the ground side of the switch, negative to ground, positive to switch. Add a 1 meg resistor across the switch.

            The module draws a hefty 60mA or so and the 78L05 regulator needs at least 7 volts to work meaning an good quality 9v battery will reach that limit after just six hour's use. Best the use the DC power input.
            Experience is something you get, just after you really needed it.

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            • #7
              Can you point out in the picture exactly how to wire the electrolytic cap and the resistor? Maybe drawing a line? From point x to y for example.

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              • #8
                Let's do a little test first to identify the problem area. Put it in reverb mode and then temporarily short out pins 2 and 3 of the switch. Repeat for pins 5 and 6. Note the difference in pop in each case and report back.
                Experience is something you get, just after you really needed it.

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                • #9
                  Ok here is the switch that came with the kit. By shorting you mean making bridges with resistor copper leftovers between the terminals of the switch? Click image for larger version

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                  • #10
                    Yes Anything metallic will do. And here is an image showing the switch pin numbers:
                    Click image for larger version

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                    Experience is something you get, just after you really needed it.

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                    • #11
                      What about testing with jumper cables before soldering?

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                      • #12
                        Originally posted by nickb View Post
                        Yes Anything metallic will do. And here is an image showing the switch pin numbers:
                        Click image for larger version

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                        Ok. I placed jumper 2 to 3 and if you switch there is barely some mechanical noise. 5 to 6 has no effect and still amplifies the mechanical noise when you step on the pedal and disable it. What next? Click image for larger version

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                        • #13
                          No! Do not operate the switch. It must be left in reverb mode and powered on. Then do the shorting test so where can see where the click noise comes from.
                          Experience is something you get, just after you really needed it.

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                          • #14
                            Shorting 2 and 3 disables the effect meaning the reverb cannot be heard. Removing the jumper cable brings back the effect.

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                            • #15
                              What we need to know is how loud a pop is made as stated in post #8, not what effect is has on the reverb.

                              That said, shorting 5 & 6 will silence the reverb effect for sure. If it doesn't then you are doing it wrong or there is a problem with the wiring or circuit. So fix that issue then repeat the test.
                              Experience is something you get, just after you really needed it.

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