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Message

Re: Cleaning/Recovering a soaked and corroded PCB

2003-01-15 by twb8899 <twb8899@yahoo.com>

Scrub the board with dish washing detergent and warm water. Then 
shake off the excess water and dry the board in an oven set to 
approximately 150 F to 200F. You can also dip a wet board into some 
alcohol to get rid of the water and then just let the alcohol 
evaporate off. If your water is really hard use a distilled final dip 
before using either drying method. Both ways have worked good for me 
but just watch out for the potentiometers etc. that might not like 
the water!

Tom


--- In Homebrew_PCBs@yahoogroups.com, "ghidera2000 
<ghidera2000@y...>" <ghidera2000@y...> wrote:
> I have a 24vac timer that got soaked pretty good. Tons of corrosion 
> on the resistors, diodes etc. The four ICs also have smooth glassy 
> looking areas over some of the pins (power pins I bet), making me 
> think they're fried.
> 
> The traces look good though. The dielectric seems to have held up, 
no 
> evidence of burning etc. Just for the hell of it, I'm going to see 
if 
> I can clean this up and replace the ICs to see if I can get it 
> working again.
> 
> Question is, Whats a good method of drying out the board after 
> cleaning? I'll go at it with distilled water and a soft brush, then 
> some contact cleaner but I'm worried about water trapped in little 
> nooks and crannies.
> 
> Would putting it in an oven set for, say, 200F for a couple hours 
be 
> a good way? If not, what would?

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