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 Post subject: Cleaning circuit board
PostPosted: Oct Thu 13, 2005 5:03 pm 
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Joined: Jan Thu 01, 1970 1:00 am
Posts: 440
Location: cornwall,ontario,canada
Going through my old transistor sets the other day found one that had leakage from batteries all over the circuit board along with what appears to be a lot of other corrosion and junk. Is there a recommended way to clean this or should I consider it scrap. It is one of those old Phillips with a bracket to mount it in a car.<BR>Thanks, Bill<P>------------------<BR>


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 Post subject: Cleaning circuit board
PostPosted: Oct Fri 14, 2005 1:23 am 
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Joined: Jan Thu 01, 1970 1:00 am
Posts: 794
Location: Gulf Breeze, FL USA
Hi Bill,<BR>For general circuit board cleaning, I have always used an acid brush with the bristles<BR>shortened to make it stiffer, and denatured alcohol. Works great for excess rosin, dirty solder etc. Don't know about corrosion though.<BR>Might give it a try.<BR>Ben Gray<P>------------------<BR>


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 Post subject: Cleaning circuit board
PostPosted: Oct Fri 14, 2005 5:01 am 
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Joined: Jan Thu 01, 1970 1:00 am
Posts: 8065
Location: Toledo, Ohio
Short of giving it a bath in a baking soda wash to try and neutralize the battery acid there is not much you can do. You might try a cleaning with acetone but that might damage some plastics that exist on the board.<P>Once the corrosion has taken hold on the circuit traces its just a matter of time before it eats the trace away.<P>------------------<BR>Jim <BR>------------------------<BR>Who was first to see a white thing come out of a chickens rear and say "That ought to taste good!"


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 Post subject: Cleaning circuit board
PostPosted: Oct Sat 15, 2005 10:15 am 
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Joined: Jan Thu 01, 1970 1:00 am
Posts: 7449
You can slow down the corrosion by spraying the board with clear lacquer spray.<BR>Dan<P>------------------<BR>


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