Troubleshooting the onboard premap's tone knob?

[wooseoklee91]

Hi i'm experiencing a problem on my onboard preamp.
Its has active/passive switch, 3 tone knobs, and balance and volume.

My pet peed on the preamp, after that happened, when I turn on the bass tone knob on, the volume gets louder as well.

I don't see anything wrong other than that.

Any Idea What has happened to my gear, and know how to fix?

[ddnidd1]

Electronics getting hosed with conductive fluid is a bad combination. There's no way to tell what's going on without inspecting and troubleshooting the preamp. Take it to a QUALIFIED tech.