Hi! I have an old Technics SU-8600 integrated amplifier. It belonged to my father, and I got it after he passed away. It is in really nice cosmetic shape overall, and everything seems to be working as far as I can tell. I am using it together with my newly acquired pair of Jbl l96 speakers. However the switches and pots are slighly dusty/oxidized. After working all the switches and pots back and forth for a good while they do work properly with no dropouts, but there is still a slight scratchy "click" sound when I use them (for example when switching between mono and stereo, or switching between speakers on/off). So I figure I should probably try to clean up the pots and switches with deoxit. I have bought four cans of different types of deoxit: Deoxit D5 spray (the new type with the new straw) Deoxit D100 spray Deoxit Faderlube F5 spray Deoxit Faderlube F100 spray So I'm all set, but I'm not sure exactly where to spray into? And which deoxit products to use where? It seems really tight inside the unit, and the switches are many different types. Also I dont want to overspray and get deoxit all over the circuitboard. Please see pictures So if anyone could please explain exactly where I am supposed to spray, and what to spray, and how to keep from overspraying, I would be very greatful! The amp has sentimental value to me, so I dont want to wreck it. I've read pretty much every thread here on deoxit, and it has me even more confused since pretty much all of them just say to "spray the pots and switches". Also it seems some people claim deoxit will ruin the feel of pots or that it will attract more dust rather than help, so I've been very careful about trying this until I'm certain that I know what I'm doing.. Thanks!