In a message dated 10/19/1999 1:56:15 PM Central Daylight Time,
[log in to unmask] writes:

<< Hi everyone,

 We were given some boards from one of our customers, that we normally would
 not do because of the fine pitch IC(20mil).  Our printing process didn't do
 bad considering the situation, but it did cause some soldering problems that
 I'm trying to fix.  This board is double sided with two 41 pins 20 mil
 spacing IC's next to each other.  The soldering problems that I am having is
 insufficient solder on some of the pins due to poor printing.  Since there
 are parts on each side, does anyone have any recommendations on how to add
 solder to the pins with insufficient solder?  How does it get done on the
 fine pitch side of manufacturing?  What equipment is needed to add solder to
 the pins?

 Any advise would be greatly appreciated!

 Jim >>

Hi Jim!

Well, sounds like something that has got to be done by hand. First though, be
sure that you truely have insufficient solder. Many times, I've had
inspectors red-arrow everything calling it insufficient when it really wasn't.

Go to: http://www.circuitnet.com and then look over under the "Information"
column, and there will be a plethora of good info about how to go about
reworking things.

The one you need to look at is: http://www.circuitnet.com/catalog/c7-5-1.htm
Really cool page! Even has an embedded video clip of how to solder gull-wing
leads...
pretty snazzy if you ask me!

-Steve Gregory-

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