erichayes wrote:...surface contamination from crappy flux or other foreign substances. I use a stiff toothbrush and acetone to clean all the gorp off the board after I'm through soldering...
I'm a bozo, and was too lazy to clean the flux off a board before I started playing with it. Now the amp has run for many hours and all the flux seems to be baked on. I tried using Zippo fluid to clean it off, which usually works very well for me, but no joy.
Can baked on flux be cleaned off? I thought if the heat of soldering didn't "set" it, I'd be OK waiting til later. Guess I was wrong...