Bill, If it's one customer I would look hard at there internal process for bare boards. I once saw a customer receive bare boards that were sealed. They cut every pack open then the receiver counted each board by hand. This guys hands were rather dirty from receiving many cardboard boxes a day. They then repacked the boards in stretch wrap. All of this was done in the warehouse. I asked the Process Engineer that I was working with if they ever had soldering problems. His replied that every now and again they would get a batch of boards that did not solder well. When I explained what I saw their receiver doing he couldn't believe it. Apparently they had overlooked the receivers procedures. They corrected this process and virtually eliminated the soldering problems. Jerry Dengler Production Manager Pergamon Corporation -----Original Message----- From: TechNet [mailto:[log in to unmask]] On Behalf Of Bev Christian Sent: Monday, June 15, 2009 1:53 PM To: [log in to unmask] Subject: Re: [TN] HAL-Leaded assembly Bill, Not enough info! What surface finish? What board type? What environment boards stored in? How long between manufacture of boards and use? Bev RIM ----- Original Message ----- From: TechNet <[log in to unmask]> To: [log in to unmask] <[log in to unmask]> Sent: Mon Jun 15 13:47:51 2009 Subject: [TN] HAL-Leaded assembly Hello everybody, I am looking for some knowledge on what I see is a basic type problem that is driving me crazy. I am a sales guy who covers a sizable territory and in that territory for a PCB manufacturer (yes one of those) I have one account that I have been working with for about 4 years now that continuously has issues assembling both hand assembly as well as pick & place. The surface finish is HAL (leaded) this is a military account that is pretty well structured in their processes. What I get told is that there seems like a contamination is on the surface when they scrub the surface it makes it better but not 100% better.They have sent back samples for us to look at , we saw nothing on the surface no contamination nothing wrong at all. If this was one of a few that has the same or similar issues it would make some sense and I could go to the people I work with asking them to look into this issue. But it is the only company that has this issue. Has anybody seen a similar type of a situation before? Understood that you cannot fix this but would appreciate advise as to where to look so hopefully this can be solved. Thank you. 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