Keep your boards dry! November 26, 2015 kg4cyx I mean, it’s obvious, but here’s what happens when the poor things suffer combination of electricity and water… The smell from this was.... Not unlike that of Subway bread being baked. That's some mighty fine soldering, Lou. The bubble under the solder resist fell off when i washed the board, revealing a sticky puddle of degraded resin and smelly corrosion. Board at left is the radio receiver. Gee I wonder why I was getting a no signal error! Yackage water.