DIYstompboxes.com

DIY Stompboxes => Building your own stompbox => Topic started by: iShawn on October 21, 2007, 03:37:27 AM

Title: What does the electronic switch look like in a schematic?
Post by: iShawn on October 21, 2007, 03:37:27 AM
I'm wanting to true-bypass my Ibanez CS-9 (http://www.freeinfosociety.com/electronics/schemview.php?id=2292).  I've looked into another mod mentioned here in which Mark Hammer suggests a pot to control the amount of mix, which I'd like to try at the same time too (assuming I could make it all fit).  What I want to know is where is the switch in this schematic?  I don't see any of the typical symbols.  I'd like to rewire the LED to work with this new switch (old switch doesn't work) but I can't seem to locate the symbol for the LED, could someone help with that too?

Is true-bypassing as simple as rerouting the signal through a new 3pdt switch?
Title: Re: What does the electronic switch look like in a schematic?
Post by: Pushtone on October 21, 2007, 04:22:18 AM

The section that looks like a big "X" with CR1 and CR2 is the general area of the switch.

Brian, of www.diyguitarist.com fame, posted a marked up schematic of where to cut to TB a B*SS pedal.
That might help you with your pedal.

Do an advanced search on the forum for "true bypass" and "B*ss" by user "Brian".
That might turn it up. If not then I'm getting his member's name wrong.

There are many How do I TB my B*oss pedal threads. But this one has the goods.
Title: Re: What does the electronic switch look like in a schematic?
Post by: petemoore on October 21, 2007, 08:48:18 AM
http://www.geofex.com/
  click 'Technology of' ...  'tubescreamer'
  Shows TS anatomy including the BP wiring.
Title: Re: What does the electronic switch look like in a schematic?
Post by: iShawn on October 21, 2007, 11:27:33 AM
Thanks for the suggestions.  What really doesn't help is self-hosted stuff is rarely up after so long, so all these wiring diagrams and pictures that would help are not there...

Why do the buffers in the pedals need to be bypassed if you're going to rewire a switch to completely bypass the whole pedal?
Title: Re: What does the electronic switch look like in a schematic?
Post by: bluetubes on October 21, 2007, 12:18:45 PM
Ummm.......diyguitarist  is Paul Marossy's site isn't it?   Great site too.  :)
Title: Re: What does the electronic switch look like in a schematic?
Post by: David on October 22, 2007, 08:44:18 AM
Quote from: Pushtone on October 21, 2007, 04:22:18 AM

The section that looks like a big "X" with CR1 and CR2 is the general area of the switch.

Brian, of www.diyguitarist.com fame, posted a marked up schematic of where to cut to TB a B*SS pedal.
That might help you with your pedal.

Do an advanced search on the forum for "true bypass" and "B*ss" by user "Brian".
That might turn it up. If not then I'm getting his member's name wrong.

There are many How do I TB my B*oss pedal threads. But this one has the goods.


Brian is at "indyguitarist" IIRC...
Title: Re: What does the electronic switch look like in a schematic?
Post by: petemoore on October 22, 2007, 09:06:43 AM
Why do the buffers in the pedals need to be bypassed if you're going to rewire a switch to completely bypass the whole pedal?
  Why do the buffers in the pedals need to be bypassed.
  Often enough I'm not sure they do.
1 so you won't have to turn the bypass to 'on' when the power is cycled.
2 you want the redundant switching to be hardwired.
  Consider
  Building a TS with TB '+, so both switches will have applications.
  Building a loop box which does most or all of what you want.
  finding an application for the intact TS9.