Replacing volume pot in Ernie Ball VP Jr. 25K

[jazzbassist1]

Hi guys,

As a bass player, I have a small pedal board that I play through, mostly for the purpose of shaping my tone and not for effecting the sound. I had an Ernie Ball VP Jr. 25K volume pedal on my board, but recently it has been giving me problems.

I would turn it all the way up and the volume would be around 50%. I would then turn it all the way down, then back up, and the sound level would be different than before, but still not necessarily 100%. Essentially, each time I would adjust it, the output volume would be different. I checked to make sure that the string that turns the volume pot wasn't slipping as I did this, and it isn't, so I'm pretty sure it's an issue with the actual volume pot getting worn out.

I was wondering if anyone knew if it is possible to replace this without having to purchase a whole new pedal. If it is, where could I get a replacement volume pot? I've searched the internet fairly extensively to no avail, so I thought I'd ask you guys.

Thanks for all your help in advance!

[testing1two]

You might try cleaning the pot first with some DeOxit. Also, if you're using the mono version of the VP Jr, the pot is 250K (the stereo version uses a 25K pot). That said, both are inexpensive and readily available.

Ernie Ball 250K Pot for Mono Volume Pedal Jr.: Shop Accessories & Other Musical Instruments | Musician's Friend

Ernie Ball 25K Pot for Stereo Volume Pedal Jr.: Shop Accessories & Other Musical Instruments | Musician's Friend

[walterw]

no, there's a 25k mono version (use it myself for guitar, after some buffered pedals).

+1 to spraying it with deoxit, but it sounds to me like the pot is slipping on the string.

there's a good youtube video out there on changing that string (might even be an official EB tutorial), and the same procedure would come into play when changing a pot.

try going through it with the stock parts to make sure they're working right.