Electronics Forum | Sat Sep 19 09:52:09 EDT 2009 | profilingguru
Before you rule out the profile, did you run an actual profile of the board or run machine characterization? How old are your TCs? Have you run them more than a half dozen times? Is your profiler calibrated. In my experience making a living of pr
Electronics Forum | Mon Aug 31 12:37:39 EDT 2009 | rocko
Hi All, As a result of equipment damage I have a problem with a cleanliness of printed circuit assemblies. One whole production batch was polluted by ionic residues because a large amount of hard water had been penetrated in the water-supply system
Electronics Forum | Tue Sep 01 11:25:19 EDT 2009 | rocko
Hi davef, Thanks for the suggestion. I have inspected the heaters but I think they are OK (no visible coating, deposits, etc.). Unfortunately, I'm not sure that the residues are ionic. It was just preliminary report of the person responsible for the
Electronics Forum | Thu Sep 10 15:06:11 EDT 2009 | dyoungquist
My guess is that he is talking about the gold plated pads not fully wetting with solder. We have seen this on some of our ENIG boards with the gold still showing at the far corners of the rectangular pads. Not knowing if this is hand soldering or p
Electronics Forum | Wed Sep 02 06:15:39 EDT 2009 | bobpan
First thing to do is make sure the y-axis encoder scale is clean. Usually on these machines you can view the status of the read head or there is a led on the cable from the read head that will let you know if it is working correctly. Green means its
Electronics Forum | Thu Sep 03 11:20:41 EDT 2009 | thunderdog5000
I have a customer that is having a flux residue problem after wave soldering. Flux is roaring through the board to the top side and leaving a residue. This is only happening on the flat stamped leads. The round leads are fine. They are using Supe
Electronics Forum | Thu Sep 03 13:07:35 EDT 2009 | markhoch
Can one of you fine people provide me any history on Westek or Westkleen Batch Cleaners? Does anyone know if either of these companies are still in business? Are they, or were they, the same company? Is anyone still using their cleaners? If so, what
Electronics Forum | Fri Sep 04 02:27:48 EDT 2009 | hurr
Hallo all, when I remove one from us malfunction BGAs from PCB I saw under X-ray inspection inner hairline crack.(see fig.1.) BGA was dried according to J-STD 033 and reflowed in lead process. When I look at new (baked BGA) under X-Ray inspection I
Electronics Forum | Tue Sep 08 15:25:35 EDT 2009 | davef
larob57 Question are: * If we are in the XBox repair business, what makes you think that that we would provide you with information about our business practices? * Don't you realize that we are solely Wii users and have never taken the cover off of a
Electronics Forum | Fri Sep 04 13:49:30 EDT 2009 | xps
Hi, in our company, we had performed a failure analysis on some PCB finishing ENIG faulty, cause detachement of heavy components. So we performed a SEM / EDX analysis on the nickel and we discover a 20 % of carbon instead of the standard 0.04% (on s
