Clean means shiny metal, to shiny metal. An eraser is good on copper or brass. A small wire brush (tooth brush size). I use carbon steel, brass bristle, and nylon. Wipe the surfaces, with isopropyl, contact cleaner, or a little WD 40 on a Q Tip. It will remove all the moisture and put a light protective coat. Screws with securements (nuts, wing nuts, the like) just work them back and forth...and a light lube, Wipe off the excess.
LOL never found a squeak I couldn’t stop...
If you’re worried about scratches. Tape off the work area with painters tape before you start, ay..
BTW, Nice Preamp.. Really one of my favorites..Lot of craftsmanship there.. That has an umbilical cord. right?
might want to unplug that and plug it in a few times.. clean the contacts... The UC.. Just to make sure..
You’ll get it..
Regards
LOL never found a squeak I couldn’t stop...
If you’re worried about scratches. Tape off the work area with painters tape before you start, ay..
BTW, Nice Preamp.. Really one of my favorites..Lot of craftsmanship there.. That has an umbilical cord. right?
might want to unplug that and plug it in a few times.. clean the contacts... The UC.. Just to make sure..
You’ll get it..
Regards