hi,
 
i think you'll need to give us more details.  perhaps a picture posted at your web site.
 
is this through hole or surface mount technology?  are there bga's?  how many components?  i think dipping them in a solder pot then acid etching away the left over sheet of solder sounds like a real bad idea.
 
if all the leads are accessable, why not just cut the leads and pick off the parts?  is this a power/ground short, or a signal to power/ground short, or a signal to signal short?  a power supply and an infrared camera can help you localize shorts without damaging the pwb.
 
phil
-----Original Message-----
From: Michelle Huang [mailto:[log in to unmask]]
Sent: Thursday, June 06, 2002 11:49 AM
To: [log in to unmask]
Subject: [TN] How to de-populate a PWB?

Hi All,  How do you de-populate a PWB board without causing too much damage on the board's outer layer, that you can still measure the resistance of all of the traces?  I am looking for inner layer shorts on the PWB. 
 
I heard you can de-populate a board by placing the loaded board into a solder bath, and the components falls off automatically.  Then, put the board into an acid bath to etch off the solder on the surface of the board.  This method seems to etch out some of the outer traces.  Do any of you have suggestions to my assistance?  Your help will be greatly appreciated it.
 
 
Michelle