Electronics Forum | Fri May 25 12:27:32 EDT 2007 | bschreiber
You should also check the quality of your compressed air. If the proper filters and desiccants are not in place, you could be recontaminating your washed boards with condensed water and oil residues from the compressed air used for drying. Bill Sch
Electronics Forum | Thu May 24 14:44:42 EDT 2007 | colormaker
We use a washer soluable solder flux for our solder wave. We then wash the boards in a dishwasher. We have done it this way for years without problems. We just got a new dishwasher and now we get residue on the solder (white marks) Anyone know of wh
Electronics Forum | Thu May 24 22:46:10 EDT 2007 | colormaker
The waste water is filtered then sent to city sewer. When we first started we had inspections and then they said our volume was so low and did not require continued testing. We wash 20-40 boards a month. Small 3x4 inch boards. If we hand rinse the b
Electronics Forum | Fri May 25 13:24:38 EDT 2007 | mfgengr
I had a similar problem a long time ago. I eventually traced the problem to undercured solder resist. The flux was reacting with what was left of the uncured resist, leaving a white residue. We could not even hand scrub this off. The solution was to
Electronics Forum | Thu Feb 10 17:33:43 EST 2000 | Ivan Rojas
I will just like to know if is ok to build a board with a BGA ,with water soluable paste and washed or is better to use a no clean paste . And one last question , what do you guys think about the better paste Kester or Indium .
Electronics Forum | Thu Feb 10 17:33:37 EST 2000 | Ivan Rojas
I will just like to know if is ok to build a board with a BGA ,with water soluable paste and washed or is better to use a no clean paste . And one last question , what do you guys think about the better paste Kester or Indium .
Electronics Forum | Thu Mar 18 20:37:35 EST 2004 | davef
Water wash cleaning with a deionized water rise is used for bare boards and assemblies [and probably components also, but we're not sure]. Look here for the basics: http://www.circuitree.com/CDA/ArticleInformation/features/BNP__Features__Item/0,2133
Electronics Forum | Wed Aug 27 00:45:35 EDT 2003 | kenBliss
Bman Each area and process has a unique machine for a reason. Professional engineers at the various OEM�s have thought these things through and there are specific reasons why you don't wash stencils in a board washer, bake pizzas in your reflow ove
Electronics Forum | Fri May 25 13:32:26 EDT 2007 | colormaker
We have 4 diffrent boards that have the problem. The boards have two diffrent suppliers. I dont think this is the case. I more leaning toward not enough rinse cycles in the washer. Jerry
Electronics Forum | Fri May 25 00:31:07 EDT 2007 | Mike Konrad
Never use a water softener for defluxing. They add sodium to the water which is bad for boards. The white residue may be flux. If that's the case, either the dishwasher is not powerful enough or the wash water is not hot enough. Another possibili
.gif)
