21 Nov
2009
21 Nov
'09
9:22 p.m.
Brian Lanning wrote:
On Sat, Nov 21, 2009 at 8:31 AM, Dave Taylor <ript
at disasterarea.net> wrote:
No, it is not water + electronics + electricity that is bad, in fact it
is "dissolved stuff in water" + electronics + electricity = bad.
Pure or clean water is rarely a serious risk, is you have hard water,
then washing the board with tap water could be a problem...
However as Shaun (Wulf) confirmed I have heard of many manufacturers of
small production run PCBs that wash their boards after assembly in the
dishwasher - hence water soluble flux - as a matter of normal operations.
So if the board is covered in crud, and the crud is water soluble, then
as long as your water has no cloudy sediments there should be little
risk to the electronics with running the board through a dishwasher (ask
your partner first!).
Note that Dip switches, potentiometers etc. need some sealant/tape to
keep them from getting the crud washed inside...
John :-#)#
--
John's Jukes Ltd. 2343 Main St., Vancouver, BC, Canada V5T 3C9
Call (604)872-5757 or Fax 872-2010 (Pinballs, Jukes, VideoGames)
www.flippers.com
"Old pinballers never die, they just flip out"
My gut feeling was water+electronics = bad... It
seems pretty unfounded
looking all the advice from this list.
water + electronics + electricity = bad. This is because it causes short
circuits that can fry components. As long as its completely dry, there's no
water to cause the shorts. The other problem is corrosion. Pure water
wouldn't do that, but all the other crud floating around in water is left on
the component when water dries, encouraging corrosion. This is why you wash
it off with a solvent (that doesn't leave deposits of its own).
brian