EHX Graphic Fuzz switch

Ernie · February 06, 2017, 09:08:46 PM

I'd like to add a stomp switch to turn on the fuzz section. It comes with a regular on off switch for some reason and a 3pdt switch for the eq. Ideally I'd like to swap the switches but I don't know if I want to mess with rewiring the 3pdt. I think it would be easier to just add another stomp switch to turn on the fuzz. Sorry for the bad pic but the solder joints are in the upper left circled in red. I have a SPDT stomp switch taken from a wah pedal. Can I use this? any info on how to wire it up would be much appreciated.

chuckd666 · February 06, 2017, 10:19:05 PM

I think you could get rid of the toggle switch, and then just directly rewire a DPDT footswitch in - mounting it or connecting it I suppose is part where you'll have to think about it.

There's quite a bit of real estate down the bottom so perhaps you could drill a couple holes and move the main F/S to one side, and the new fuzz footswitch to the other side.

mth5044 · February 07, 2017, 12:13:55 AM

It really is hard to tell from the blurry picture, but it looks like it's a DPDT. Might be because the switch only came in that variety and they used only a SPDT or even a SPST section. Would have to get into the pedal and see what connects to what, or better yet, find the schematic.

Ernie · February 07, 2017, 07:59:43 AM

Unfortunately I don't understand exactly whats going on here.

Ernie · February 07, 2017, 08:02:46 AM

Here's a clearer pic.

PRR · February 07, 2017, 07:27:34 PM

> I have a SPDT stomp switch

Sure. They used a DPDT but the action is SPDT. (Maybe in these teeny-switches, DPDT is cheaper, or the 6 legs are better support.)

Remove the old switch. Tack wires to the PCB pads. Mark the center wire. Run them to your SPDT switch. Center wire to center. Other two either way.

The big "risk" is bodging-up those tiny PCB pads. And yes, you do have to remove (or de-gut) the PCB switch.

Ernie · February 09, 2017, 11:09:26 AM

Perfect, that works great. I'll post some pics later when I have it apart again. I just gutted the toggle switch so that I could use the existing posts to solder my wires to. Now I would like to utilize the hole where the toggle switch was to put a LED light to come on when the new Fuzz stomp switch is on. Is there an easy way that someone could explain how to do that?

PRR · February 09, 2017, 05:12:38 PM

> LED light to come on when the new Fuzz stomp switch is on

If you wanted that, you needed to score a DPDT switch.

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EHX Graphic Fuzz switch