Home Forums GuitarPCB Build Support 3pdt plop sound Swah

This topic contains 5 replies, has 3 voices, and was last updated by  fr4nck 2 months, 2 weeks ago.

Viewing 6 posts - 1 through 6 (of 6 total)
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  • #6037

    fr4nck
    Participant

    Hi all,

    I’ve build a swha kit bought from muzikding and I really love how it sounds. But I don’t understand why spdt is noisy like this. In the first link I only play and in the second I active and desactivate spdt switch.

    small guitar test 🙂 (I’m learning 😛 )

    Plop sounds

    1. Did I made something wrong?
    2. Is it a problem from my house? (I use a fuel tank junior power supply)
    3. Could I had a condensator or a resistor somewhere to remove that noise?
    4. Did I broke a component or other? (I burnt a part of the track between D6 and R31, when I removed the previous led…)

    Just a photo of the Swah and tube screaming ultra 😛 (not completely finished but playable 🙂

    Cheers

    Franck

    #6038

    Billy
    Moderator

    If it’s a pop when you switch it on and off firstly check R2 has good connection by reflowing the solder joints then try soldering a wire from 3PDT lug 1 (input) to lug 6 as below to ground the input when switched

    #6040

    fr4nck
    Participant

    Yes it’s a pop, i tried to do what you wrote but it’s the same.`
    I have pop with others build effects but with this one, it’s louder.

    Should I test r2 values?

    #6051

    Barry
    Keymaster

    Test your pedal only with a battery to rule out a ton of issues not pedal related.

    Batteries cannot produce noise thus eliminating all power supply related issues.

    Only test the pedal by itself to rule out several other issues.

    You can connect a battery to your pedal using your 2.1mm connector attached to a battery strap but be sure it is wired correctly so that it is Negative Tip.

    This is an excellent tool to always have handy when troubleshooting.

     

    #6052

    fr4nck
    Participant

    Hi Barry,

    I tried with a battery and it’s the same 🙂

    Maybe… I’ve found a direction…
    I tried to put a wima 0.33/250 on the “T” out and the spdt noise was not there.
    with the condo: https://youtu.be/wBD0DNn5U-Y
    and without:https://youtu.be/nsNujUVxyag

    I’m pretty sure that the pedal did not this noisy sound before. Do you think a condensateur might be dead?

    If there’s no other solution, witch condo size should be the best? because I tried wima 470/630 and the sound wasn’t has good has without any condensator.

    #6053

    fr4nck
    Participant

    Ok I was THE problem…C6 was not able to do his Job because (i don’t know how…) + & – were soldered …
    I kill a led and pcb look like a battleground… but I’m happy to say that Learning electronics without theories haha It may be sometimes hard 😀

    Thanks all

Viewing 6 posts - 1 through 6 (of 6 total)

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