VOX V847 Wah - serious buzz when the wah is engaged?? NEED SOME HELP??

Started by ianvomsaal, August 14, 2007, 06:15:07 PM

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ianvomsaal

I wired up my VOX V847 Wah using a 3PDT switch and this diagram:
click here: 3PDT wiring diagram
However, now when the wah is engaged I get a really terrible buzzing (which gets even louder with the pedal in the toe-down position).
It only gets the buzz when I engage the wah.
I tried rewiring it two different ways (the above diagram and the Fulltone diagram), but I still get the bad buzz.
I'm lost -- How do I fix this???
Here are a few pictures of how I wired it:
click here: VOX V847 WAH-1
click here: VOX V847 WAH-2

click here: VOX V847 WAH-3
Cheers . . .

- Ian C.T. vom Saal
click here: FOR MY BACKGROUND and TO LISTEN TO SOME OF MY MUSIC
~ Music-washes-away-the-dust-of-everyday-life ~ ART BLAKEY
~ Without-music-life-would-be-a-mistake ~ FRIEDRICH NIETZSCHE

bacaruda

I had a major oscillation issues with the first v847 I made true-bypass.  Turned out I had reversed the boards in/out leads - easy to do since the switch is in a strange location (compared to most other pedals).  Hope yours is an easy fix too.

I can't quite make out how you wired that switch.

ianvomsaal

Here's another PIC of the SWITCH - I hope you can make it out better:
http://i174.photobucket.com/albums/w83/ianvomsaal/IMGP0676.jpg

1= empty.
2= ground to screw that holds white nylon gear clamp.
3 is jumpered to 6.
4 is jumpered to 9.
4 is also the BROWN wire (input jack tip).
5 is GREEN wire (I think this is the PCB IN).
6 is jumpered to 3.
7= BLUE wire (I think this is the PCB OUT).
8= WHITE wire (output jack tip).
9 is jumpered to 4
click here: FOR MY BACKGROUND and TO LISTEN TO SOME OF MY MUSIC
~ Music-washes-away-the-dust-of-everyday-life ~ ART BLAKEY
~ Without-music-life-would-be-a-mistake ~ FRIEDRICH NIETZSCHE

Solidhex

Yo

  You didn't wire an LED with it right? If not, for true bypass you would only need to use 6 terminals on the switch. The in and out, the board in and out, and a jumper connecting two terminals. I would think the only reason to have the switch grounded is to supply current to an LED? Disconnect the ground and see if it goes away.

--Brad