Use 100% Isopropanol (Isopropyl Alcohol). Get a 1/2 inch paint brush, the sort you would use for trimming around window frames etc, and cut the bristles back to about half length to stiffen it up a bit. Dip the brush in the alcohol then scrub a small area of the circuit board for about 20 seconds, then dab dry with an absorbent cloth. I have never damaged any boards this way, but it's not particularly "safe" because Isopropanol is highly flammable, so do it outside and away from sources of ignition. Also the chaps at Elecraft don't approve of cleaning boards at all, but I won't tell if you don't.
73 Paul ZL3IN > Can any of you folks recommend a safe way to remove > excess flux from a PCB? _______________________________________________ Elecraft mailing list Post to: [email protected] You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com
