Electronics Forum | Fri Jan 16 14:35:07 EST 2009 | realchunks
Had the same problem with boards from China. Try using Scotch Brite medium duty pad. It worked for us.
Electronics Forum | Fri Jan 16 15:34:56 EST 2009 | black5629
Thanks, we tried using some very fine sand paper and did improve. Any one know of any chemical that would work.
Electronics Forum | Thu Jan 22 09:59:18 EST 2009 | jeffcali
try making your boards in the USA. There's better QC, and if any problems do happen, they can be solved easily and quickly saving you money in the run. You get what you pay for. Good luck.
Electronics Forum | Sat Jan 17 17:42:07 EST 2009 | viresh
what is the impact if a solder paste is used after 24 hours after tawing time
Electronics Forum | Tue Jan 20 06:19:12 EST 2009 | lkpdsund
I mean compressed air... But what is the difference between dull and shiny joints? Is it better electric conduct? Does the N2 obstruct voids i.e. ??? Thank you for your answers.
Electronics Forum | Mon Jan 26 11:14:08 EST 2009 | evtimov
This one might help http://www.smtnet.com/Forums/index.cfm?fuseaction=view_thread&CFApp=1&Thread_ID=13630&mc=5 Emil
Electronics Forum | Mon Feb 09 20:01:23 EST 2009 | davef
Look here http://www.smtnet.com/forums/Index.cfm?CFApp=1&Message_ID=57106
Electronics Forum | Thu Jan 29 16:48:49 EST 2009 | slthomas
Looks like a time/temperature problem to me. However, there are a lot of solder fines surrounding the pads in one photo that go beyond what I'd expect from inadequate TAL. Is it possible that the board was misprinted and not completely cleaned, or
Electronics Forum | Sun Feb 01 07:50:07 EST 2009 | davef
The concern about lead contamination of lead-free solder has to with zone refining. For more, look here: http://www.smtnet.com/forums/Index.cfm?CFApp=1&Message_ID=30315
Electronics Forum | Mon Feb 02 11:52:07 EST 2009 | pjc
Is anybody using H2O washable solder mask that comes on the PWBs you get from the fab vendor? I am researching PWB vendors that can provide this service. Thanks.