70's Big Muff

Started by jnever, January 11, 2004, 03:29:45 PM

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jnever

Hello, I am a new member here and was hoping to find a little help.  My Tone/Bypass switch on my Big Muff was broken(again)...and by broken I mean it was in about 10 pieces...and I am not sure how to rewire a new switch in.  If possible I would rather not even have a switch and just have it wired for the tone to always be active.  As it is now, it looks like there should have been 3 wires going from the board to the switch.  From right to left  I have green, green and I am guessing red.  The red wire is no longer attached to anything at the moment, so I don't know where it should be connected.  

Any help would be greatly appreciated!  The board has EH1322 if that helps.

James

idlefaction

maybe take some photos of the insides so those of us who don't happen to have one of those exact pedals can try and help?  :)
Darren
NZ

jnever

You should be able to see it here...let me know if it doesn't work.  

From left to right...Input, Tone/Bypass, Output.

One of the 3 posts below the input is where I think the missing red wire is supposed to go.  You can also see the 2 green wires that are not connected to anything...where the tone switch was.

Thanks again for any help.

James

http://www.imagestation.com/mypictures/inbox/view.html?id=4193770205&url=http%3A%2F%2Fwww.imagestation.com%2Fpicture%2Fsraid99%2Fp81f77d6a4a32e6effd228a64dc0b9113%2Ff9f7dadd.jpg&caption=DSC00016

Skreddy

[edit: Oh, I see yours looks like an opamp model.  Nevermind!...]

I repaired one of those [a non-opamp model; sorry] last year and took pics of it.  Hopefully you can follow the wires and re-do yours.  I thought a BMP with a tone bypass would be great, but I found out that a good tone stack sounds way better than the bypass.  Anyhow, click in here and fish around...
http://happybob.com/skreddy/circuits/ElectroHarmonix/
The pictures called circuit and circuit-close should help.  I've got PSP and PSD files in there which overlay the components and the printed circuit, in case anyone needs that kind of info.