when i adjust the volume in my ghostbusters cabinet, i get a 'scratchy' sound.. its not the pcb as it is a 48-1 and it never made this sound in my other cabinet. and any other pcb that i put into the ghostbusters cab, the same sound occurs when adjusting the volume.
do i just need a new pot, or clean the two pieces that make contact?
if i need a new pot, is there a certain rating for one?
do i just need a new pot, or clean the two pieces that make contact?
if i need a new pot, is there a certain rating for one?

