Was reading another thread about laptop
keyboards getting shorted. Reminded me of the whole problem with electricity and salt water
, they dont mix well. Or perhaps its that they mix TOO well. I wanted to pass something along for those who might not know that sometimes, if you act quickly, you MIGHT, sometimes, be able to save some electronics
that have fallen into salt water
. I have used this with some success with such things as side-scan sonar systems and survey
fathometers when a small boat took a wave.
If an electronic device gets innundated with salt water
, the first thing to do is to remove power to it. Unplug it. Disconnect it. If its batteries, get em out. The salt water
that shorted it all out shorted the battery
or power supply , too, so full power has not been applied to the circuits while it was dunked. But some power may start back making circuits when things start drying out. You dont want that.
Then open up whatever it is, remove all the cover screws, etc. Take the PC board(s) out if you can. Wash them with fresh water. Distilled water is best, of course, but dont wait several hours if you dont have it...use tap water. Bottled water. Purest you have on hand. You arent going to cause any more damage, since its already wet. Wash off the salt/minerals. A toothbrush makes a good scrubber. Scrub all around the components, especially connectors. Unplug any connectors and wash them out good, Then liberally wash it all again with alcohol. No, not rum
, thats for you. Use denatured rubbing alcohol, methanol, something thats going to evaporate. I think the alcohol acts like a BVE for the water, "thinning" it out and making it easier to drain and dry. Let the board dry completely. Putting it in an over at about 100 or 150 deg.F wouldnt hurt.
sometimes I have seen a whitish residue on the board after drying. I usually hit it with the alcohol and toothbrush again if its not clean.
When dry, put it back together and apply power. You might be surprised.
Sometimes it works.