Hi guys

I was advised by a member to create this new thread.

Could you help me plz?

I have a classic wah wah pedal v845 which I acquired in 2010.
Recently I have faced a weird problem: when I engage the pedal it works fine, however, when I immediatelly turn it off, it does not disengage properly.
After switching it off, the sound becomes quietly and thin, but if the pedal is engaged again, the effect works normally.
This problem seems to happen only when disengage the pedal right after using the effect.
I thought it could be the switch's bad connection and I have replaced it, but the problem remains.
Do you have any Idea about what it could be?

Thanks in advanced!