Korg Forums

Hey there! OMG I'm having the EXACT same problem here, tried using contact cleaners but it wouldnt work, tried to open up but am scared i might damage the components, any idea on how to fix this? or is it really a need to send it to the factory to have a look? I have tried all these things too, and ...

no, you would eiter have to create two similar patches, one with the expression pedal set to "volume" and the wah wah effect off, and the other with the expression pedal set to wah wah, or you could buy a seperate volume or wah pedal.

hi mate, i have exactly te same problem, does your gain setting also change when you move the expression pedal? and does the left parameter(wich is "gain" for amp) also change randomly when you've selected another effect (e.g. mod)? i tried to re-solder the pot and oiled it, but it didnt work. but ...