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DIY Stompboxes => Building your own stompbox => Topic started by: Josemitejam on December 19, 2020, 11:42:25 PM

Title: Volume works even when pedal is off
Post by: Josemitejam on December 19, 2020, 11:42:25 PM
Hi all,

I've built a good handful of kits, but I'm just now venturing into etching my pcbs/using strip board and going without a kits instructions. I recently built this tonebender mk1, but I must have goofed up the off board wiring. The issue is that the volume pot will adjust the guitar/amps volume even if the pedal is switched off. Also it sucks quite a bit of tone when switched off. Can anyone easily spot the issue?

I'm following this layout:

http://tagboardeffects.blogspot.com/2011/01/tonebender-mki.html

And this wiring:

http://www.generalguitargadgets.com/pdf/ggg_sw_3pdt_tb_pnp_dcj.pdf

Here's two pictures:

(The dc jack is off to the side, out of the picture.)

(https://i.postimg.cc/YvR7LfyL/14-E3702-C-0-E3-F-4-C13-82-A5-D92-A9-A6-D8281.jpg) (https://postimg.cc/YvR7LfyL)

(https://i.postimg.cc/mcrsYz0X/229-A7-D68-AA45-438-C-A5-F5-E210-F2-CD17-B3.jpg) (https://postimg.cc/mcrsYz0X)


Thank you for your time!


Joe
Title: Re: Volume works even when pedal is off
Post by: Keeb on December 20, 2020, 12:17:17 AM
Your volume pot (I'm assuming) is still connected to the jack regardless of switch position. Your circuit "out" should go to the switch and not the jack. Connect the light green and red wires together off the jack and keep the purple on the jack.

That seems to be the problem with just a quick glance!

(The way it's wired now is that you ground the outout jack tip through the volume pot, regardless of switch postition. That makes your signal go straigt to ground when volume is all the way down)
Title: Re: Volume works even when pedal is off
Post by: iainpunk on December 20, 2020, 07:35:13 AM
that red wire going form the pot to the jack, snip that off
the green wire going to the swich from the PCP on the output side, snip it out
where the red wire came off the pot, reconnect it where the green wire was on the switch before

cheers, Iain
Title: Re: Volume works even when pedal is off
Post by: duck_arse on December 20, 2020, 09:16:00 AM
I would have said what they both said, except neither of them said welcome.

welcome to the forum.
Title: Re: Volume works even when pedal is off
Post by: iainpunk on December 20, 2020, 09:40:46 AM
ow, shit, i forgot it again,

welcome to the forum
Title: Re: Volume works even when pedal is off
Post by: antonis on December 20, 2020, 12:27:50 PM
Toooooo late for sorry, Iain..  :icon_mrgreen:
Title: Re: Volume works even when pedal is off
Post by: GibsonGM on December 20, 2020, 12:33:33 PM
At least you weren't mean to him.    :)
Title: Re: Volume works even when pedal is off
Post by: antonis on December 20, 2020, 12:42:21 PM
Quote from: GibsonGM on December 20, 2020, 12:33:33 PM
At least you weren't mean to him.    :)

I'm not sure about, other than myself, person's intentions, Sir..!!   :icon_mrgreen:


P.S.
Long time to hear you, Mike..  :icon_smile: :icon_biggrin:
Title: Re: Volume works even when pedal is off
Post by: Josemitejam on December 20, 2020, 04:08:01 PM
Haha thank you for the welcome! And that solved it right away - thanks a ton everyone!
Title: Re: Volume works even when pedal is off
Post by: iainpunk on December 20, 2020, 06:49:56 PM
Quote from: Josemitejam on December 20, 2020, 04:08:01 PM
Haha thank you for the welcome! And that solved it right away - thanks a ton everyone!
nice going pal, here, have your first like:

cheers, Iain
Title: Re: Volume works even when pedal is off
Post by: duck_arse on December 21, 2020, 08:44:39 AM
Quote from: Josemitejam on December 20, 2020, 04:08:01 PM
Haha thank you for the welcome! And that solved it right away - thanks a ton everyone!

well that's no good - how we gonna keep this thread going now?