Vox wah 847 issue

WingZero

Electromatic
Oct 21, 2021
66
Québec City, Canada
hello All,

I've had this vox wah for a long time, i have a love hate relationship with it, it sounds great, but as sturdy as it looks its damn unreliable.
First the toe switch got jammed, I got a new one on warranty.
Then the holder for the battery was not making contact properly, bought a power supply.

Then there was the fact that it would not engage, and sometime would...
This last issue is quite weird, there seems to be no contact with the instrument input jack, so sometimes when I engage, the sounds just cut off - sometime it works as expected. WHen I do not engage, the signal goes through and I have sound... If I engage, and move the cable into the socket I do get some sounds but it does not stay in place since the pedal requires movements.

Anyone seen that before?
I don't want to keep pouring repairs and time in this unit if it ain't gonna solve the thing, but I don't wanna buy another wah just for that either. It does sound good when it works, but unreliability prevents me from taking it to gig. I feel I could just change the jack socket maybe?
 

thunder58

Super Moderator
Staff member
Dec 23, 2010
26,087
tappan ny
I don't want to keep pouring repairs and time in this unit if it ain't gonna solve the thing, but I don't wanna buy another wah just for that either. It does sound good when it works, but unreliability prevents me from taking it to gig. I feel I could just change the jack socket maybe?
Just a thought ..... dump it
Sounds like your throwing good money after bad . What's next ??
 

Waxhead

Friend of Fred
Aug 30, 2014
5,186
Australia
hello All,

I've had this vox wah for a long time, i have a love hate relationship with it, it sounds great, but as sturdy as it looks its damn unreliable.
First the toe switch got jammed, I got a new one on warranty.
Then the holder for the battery was not making contact properly, bought a power supply.

Then there was the fact that it would not engage, and sometime would...
This last issue is quite weird, there seems to be no contact with the instrument input jack, so sometimes when I engage, the sounds just cut off - sometime it works as expected. WHen I do not engage, the signal goes through and I have sound... If I engage, and move the cable into the socket I do get some sounds but it does not stay in place since the pedal requires movements.

Anyone seen that before?
I don't want to keep pouring repairs and time in this unit if it ain't gonna solve the thing, but I don't wanna buy another wah just for that either. It does sound good when it works, but unreliability prevents me from taking it to gig. I feel I could just change the jack socket maybe?

If I'd had that many problem with any pedal I'd have sold it long ago - good luck :D I'm not a fan of the Vox wah tone either.

Morley and Duncan wah pedals sound great and are super reliable.
Auto step on/off Morley wahs are my fav :)
They also make some small & light weight wahs
 
Last edited:

WingZero

Electromatic
Oct 21, 2021
66
Québec City, Canada
Sounds like it might be a bad contact. Try a good contact cleaner or isopropanol(cleaning alcohol) first.

Sometimes the metal tabs get tired and bend away from the contact point. You could try bend them back but that’s postponing the inevitable. Replacing the jack input.
I've rebent it, seems like the bad contact is not on the tip, but on the sleeve.

MY THEORY: the current is only passing through when the cable is in, so I suppose something in the cable sleeve serves for the AC current. if the signal was not passing at all, I wouldn't get sound when the wah is off, but I do get sound without any loss. I think it's something about the power not going through when I turn it on due to loose cable, yet not sure how to fix it.

From most posts here, seems like a new wah is a good solution too.
 

Waxhead

Friend of Fred
Aug 30, 2014
5,186
Australia
aren’t Morley and Vox the same pedals just rebranded?

No connection according to the Morley website :)
https://www.morleyproducts.com/the-morley-history/

My fav of their switchless wah pedals is this guy - sounds great & is small and light.

https://www.morleyproducts.com/mini-classic-switchless-wah-demo/

Once you try a switchless wah you won't bother with any old school switching one again ..... and it begs the obvious Q - if Morley can make small & light switchless wahs why doesn't everyone ??
 
Last edited:

hcsterg

Friend of Fred
Feb 13, 2012
6,394
France
Hi @WingZero,

I have one dozen of "VOX-Dunlop-and-the-like" Wah-Wah pedals and also other brands (SolaSound, Morley...), some stock, some rebuilt, some projects - so I may help o_O ...

qbvkJb-wahs.jpg

4e36Ib-SMOBY.jpg

9EpKIb-IMG-5188.jpg

5EpKIb-IMG-5140.jpg


Here's what I can say - from my experience of use/repair of the VOX-and-the-like models :

1 - The switch :

* Yes, it tends to accumulate dust, because of its place, so think to brush / clean it time to time.

* If it hesistates to click / engage / disengage or unexpectedly mute, most of the time it is a matter of height adjustment. You just have to screw/unscrew the nuts (one up, one under) until you find a reliable engagement / disengagement point that suits your needs. Use the correct flat wrench and you're done.

2 - The jacks :

* A classic jack à la Switchcraft may need tightening / retensionning / cleaning : easy.

* A PCB/onboard jack is more annoying : it can break, or have its contacts warped by an accidental foot pressure on the IN/OUT jacks. You may need to replace it, and so the tools to do the job... But often, you can meet success by tinkering it if the damage is not severe.

3 - The pot :

* Scratchy pot always arises at one time or another : it is the track and wiper which is clogged with dust and grime, or is worn by the round trips of the wiper with the years of use.

* If it is an open model, unprotected, don't hesitate to clean it regularly because indeed they generously collect dust and grime. I even remember removing some and rinse them under flowing hot water... :eek:

* If it is a sealed one, they last longer but when it's over, you have to change it (there are many quality replacement pots available from Dunlop and other - check the model references).

3 - The rest :

* The threadle pedal movements becomes hard and / or creaky : toroughly clean grime, dust and oxydation and lube the joint. It's purely mechanical, so most of the time it will be enough to be OK.

* The rack / pinion needs the same treatment. Put just enough pressure with the back wiper to apply the rack in the pinion teeths without slipping. Maybe you will have to readjust the rack / pinion relative position at one plus or minus tooth to achieve the desired wah sweep under your foot.

Good luck ! ;):)

A+!
 

WingZero

Electromatic
Oct 21, 2021
66
Québec City, Canada
Hi @WingZero,

I have one dozen of "VOX-Dunlop-and-the-like" Wah-Wah pedals and also other brands (SolaSound, Morley...), some stock, some rebuilt, some projects - so I may help o_O ...






Here's what I can say - from my experience of use/repair of the VOX-and-the-like models :

1 - The switch :

* Yes, it tends to accumulate dust, because of its place, so think to brush / clean it time to time.

* If it hesistates to click / engage / disengage or unexpectedly mute, most of the time it is a matter of height adjustment. You just have to screw/unscrew the nuts (one up, one under) until you find a reliable engagement / disengagement point that suits your needs. Use the correct flat wrench and you're done.

2 - The jacks :

* A classic jack à la Switchcraft may need tightening / retensionning / cleaning : easy.

* A PCB/onboard jack is more annoying : it can break, or have its contacts warped by an accidental foot pressure on the IN/OUT jacks. You may need to replace it, and so the tools to do the job... But often, you can meet success by tinkering it if the damage is not severe.


Good luck ! ;):)

A+!

1 - woah that is a lot of wahs!

2- my vox is a little different, my jacks are black boxes
V847A_hood_8.jpg


I do have a switchcraft jack at hand right now, I guess I can switch one of these for a switchraft... if so I won't buy another wah, if it does not work... GIRLFRIEND WILL UNDERSTAND
 

wabash slim

I Bleed Orange
Feb 10, 2010
16,642
lafayette in
Sounds like it might be a bad contact. Try a good contact cleaner or isopropanol(cleaning alcohol) first.

Sometimes the metal tabs get tired and bend away from the contact point. You could try bend them back but that’s postponing the inevitable. Replacing the jack input.
Use ethyl alcohol if possible. 200 proof. Purest type there is. You might have to get it from the pharmacist. NEVER use rubbing alcohol as it has additives like wintergreen. For contact cleaner, use DeOxIt.
 

BatmansGretsch

Gretschie
Dec 3, 2019
205
Earth
It's a cheap wah that you run to the ground and then replace with your backup and get another backup. It costs four times less than my true bypass CAE wah so I expect to go through four units to equal the cost of my main wah.
 


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