Electronics Forum | Fri Feb 21 11:22:13 EST 2003 | MA/NY DDave
Hi "PCB blank quality. " I am not sure what the word blank means. ------------- I can think of piles of places for you to start study. First digest some of the IPC stuff. They have some good pictures. I would also start collecting defects that ar
Electronics Forum | Mon Feb 24 10:03:03 EST 2003 | davef
YiEng, MA/NY DDave, Look at: * Description on first item on this list: http://laser.jlab.org/bairweb/hardware/vme/vme_spares.asp * Description of first item on each list: http://www.audiocircuit.com/9120-valveamplifier-circuit/Diy/Diypackages/Curci
Electronics Forum | Tue Feb 25 14:42:28 EST 2003 | MA/NY DDave
Hi UNCLE!!! UNCLE!!! You know maybe I do remember this term, yet it is so long ago it doesn't ring a clear bell. From the stuff you passed over it had to come from the electrical technicians and engineers. Bare Boards was a more common term in m
Electronics Forum | Tue Mar 11 15:24:24 EST 2003 | MA/NY DDave
Hi You are a young guy yet, I bet! No fair with that taste of that old black or dark beard effect. It was great while it lasted, yet I like this new grey stuff. Too bad in the USA it is seen as a Done-With it affect. Shave the face and almost no
Electronics Forum | Tue Feb 25 13:44:12 EST 2003 | slthomas
One addition to Dave's comments.....my previous experience yielded one key observation about the differences between ISO audits and GMP (FDA) audits: ISO audits were to establish that you had a documented process, complete with procedures, establishe
Electronics Forum | Wed Feb 26 11:06:27 EST 2003 | slthomas
Always a joy to see a stencil cleaner thread get opened up....lots of varying opinions as to what's needed, best, environmentally sound, etc. We use an ultrasonic batch cleaner that uses a detergent (dilute to 1:10 or 1:20, can't remember), then bo
Electronics Forum | Wed Feb 26 15:26:44 EST 2003 | MA/NY DDave
What object am I cleaning 2>What chemicals/deposits am I removing (Chemistry?? 3>What is the process my machine uses. Now if Water Based works than you are OK from a cleaning aspect. The only problem as Mike noted, at least to my reading, is what ca
Electronics Forum | Wed Feb 26 18:48:01 EST 2003 | kennyg
I'm trying to solder a 0.011" lead into a 0.015" +/-0.003" hole. Stop laughing please. This is normally possible with difficulty, except if the lead is removed and the attempt is made to re-install a lead. Anyone have thoughts on how to remove nea
Electronics Forum | Wed Feb 26 21:21:34 EST 2003 | davef
Try this: * Lay the board onto a solder pot with the via in question on the heat. * Push the wire into the via. * Step back and pat yourself on the back. Since you probably have components in the area of the via that you don't want to cook, try a va
Electronics Forum | Fri Feb 28 01:25:44 EST 2003 | MA/NY DDave
Hi Wow, Sounds like a neat problem. As an other idea try inserting the largest wire you can get in the hole and heating the free end to wick solder up the wire away from the hole. I probably like the solder pot with a small nozzle the best so it h
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