How to Mod a Wah Pedal for True Bypass (Vox V847)

Here I show How I modify a Vox V847 Wah Pedal for true Bypass to prevent the pedal from affecting your tone when it is not engaged.
This is the second Vox V847 I have performed this mod on with great success.
Wah Wah pedals traditionally renowned for dulling off your tone when disengaged.
This mod rectifies that problem.
Hope you find this video helpful.
All the best,
Paul.

[DenisMorissetteJFK]

Thank you! I wasted a lot of time because I missed a detail in your video. Lesson learned.

[rnadav]

Thanks for a great video! Works perfectly on my 847 pedal (which I have for more than 25 years!)

[Taffafilms]

Thank you for this tutorial Paul !! It worked perfectly on a VOX 845. I used a 2PDT switch.

[nervous]

Thank you. Excellent mod. I’m using my way with a keyboard, and only using it on the clav sounds. The rest of the time it has to be super-quiet. The mod worked well, but there was still a bit of residual noise. I found that if I ran a wire from the ground of the output plug to the case, the noise was considerably less. I also found that a DPDT switch works well, and is a lot easier to get hold of in a hurry. Thanks again.

[derekwozniak]

Excellent tutorial, just did mine! Unfortunately the 3pdt I bought is too short so I had to stick something on top of it lol, that's my fault for not checking though. Works great!

[daniellacatton]

Spot on, Works a treat on the Vox V845 Classic war pedal. x

[AmagrasMUSIC]

Thanks Paul, appreciated those close ups of the 3pdt

[johncasimir]

btw, the new switch is a triple pole double throw.

[archiecervantes]

Just discovered your channel. Your videos are awesome, I totally enjoy them! Keep up the good work. Thanks for sharing, btw, I just subscribed although a little late lol.

[kevinficzere]

DO NOT DO THIS MOD IF YOU RUN A FUZZ PEDAL! other than that, it works great. Thank you for the video Paul.

[archiecervantes]

Please put out some more videos when you get a chance :)

[chefmuscle]

Just did it using your tutorial, cheers!

[islamsuperchannel]

My Vox 847 sound to glassy, how to fix it... Great video sir

[DenisMorissetteJFK]

I think I did like you did here. The Wah effect is there. However, the white cable on the input jack must be not connected... Also, either the battery is connected or not, the non-processed guitar sound is not there. I checked with a multimeter that the the connector on the input and output jacks are communicating. Thanks.

[sunmoon]

Great video. Teaching a man how to fish.

Just one question, any changes if it was an A version? the one with the power plug in?

[omargrini]

good evening I need the electronic diagram of the wah wah pedal v847 thank you

[jman]

my V845 might have some colors mixed up, my brown wire goes from input to the switch, and the green one goes from input to board, am I correct to just do green when you say brown and vice versa?

[DejanVukic-xwmz]

Hi Paul! I'm destroy my old potenciometar when i'm try to fix it, now i have problem how to find a new one. I have seam pedal Vox V847 U.S.A. like you. Can i replace it with Dunlop ECB24b Hot potz? They have similar specs.

[JusSteve]

Hi Paul. Great instructional video. I think I followed the instructions. I have awesome wah-wah, but dead on the by-pass. It's a V847A. Does that affect the wiring logic? I have a pic of the finished mod if that would help.The internal configuration of my V847A and your V847 do look slightly different. Plus yours is made in USA and mine is made in China. Thanks.

[Diogoleenze]

Man, I need help. I have a vintage v847, it was made in 1995. It used to work very well, I changed the pot once, it was the only problem that it showed. One beautiful it just stoped working. It's original, no mods. What is happening is, the signal from guitar is passing but no wah effect is playing. The main point is, it's not true bypass but the signal is passing without a power supply. Do have any idea?