ANNDD, the amp is new

I think that the problem is in the midle potentiometer. the button is loose. as I know how to repair the reverb now. I happen to live in a cididade far from an expert licensed marshall to cover my warranty.

hello friends, I have a problem with my marshall ma 100c. sometimes when I switch to OD remains clean, sometimes turn on OD but the volume is too high. when this happens the volume does not decrease, and the midle button is loose and push for changes in the volume. is very strange. Not to mention th...