My MINT's pot is behaving strangely - when I turn the volume up or down too fast, the sound either crackles and turns to a hum (if I'm running on the DC jack), or just stops (if I'm running on batteries). It comes back when I stop turning. Is the pot bad, or is this a problem with my amp?
EDIT: Another thing is, once it gets to about 70%, it starts hissing, and then drops out at 95%. I suspect my R2 value might not be high enough, so I'm subbing in 1MOhms right now.
I'm not sure about the R2 values, but check your connections. It sounds like you might be having some kind of grounding problem. The connections on the pot are highly suspect since you seem to have problems when you turn the pot too fast. A quick reheat of the joints there might do it. Also, check for good solder joints: the nice shiny ones. Any dry, grubby looking joint should be cleaned out and resoldered.