Electronics Forum | Mon Aug 31 07:56:39 EDT 2009 | d0min0
Hello, since some days we are facing strange problem with SMT component reflow paste on one side of the component is reflowed correctly while the other side is 10%-70% non-reflowed (same component on 3 positions per module, alwyas the same land pad)
Electronics Forum | Wed Sep 23 03:43:31 EDT 2009 | d0min0
hello, we are profiling with the pcb each day - results are very good with a small delta we made another test board with TC only in the problem places - same good result we tried 500-600 boards on 12 zone machine - zero defects while on standard 6
Electronics Forum | Fri Sep 04 02:09:03 EDT 2009 | sachu_70
Hi Walter, Do you refer to a sprayfluxer operation? The problem seems to be a parameter setting issue. 1. Ensure the wide angle spray reaches PCB with optimum jet pressure. You could pass a glass plate to understand flux coverage and view Jet pressur
Electronics Forum | Thu Sep 03 12:03:52 EDT 2009 | Sean
Hi All, I have few questions about creeping corrosion that potentially happen on lead free immersion silver PCB as below: 1) What test that we can conducted to verify whether the failure we seen is due to creeping corrosion? 2) I heard that lead fr
Electronics Forum | Mon Oct 05 10:29:38 EDT 2009 | cyber_wolf
I ended up finding that there were broken chords on the X-belt. I replaced it and all is good. Rob, Mydata is right. You can indeed end up spending lots of time and money trying to chase a transducer error. Things I would look at: 1. Lubing the X b
Electronics Forum | Tue Oct 27 11:20:16 EDT 2009 | smtspecialist
I had the same problem back in March with my MY12, since I have two identical lines i swapped things around until swapping the x-wagon motor (the one for fine movements). When I swapped the x-motor I move the problem from one line to the other gener
Electronics Forum | Thu Oct 29 08:19:57 EDT 2009 | cyber_wolf
Hmmm...The Juki machines are designed for high mix frequent change over. They are very flexible. I am not familiar with a JX100. We have KE2000 series machines. One of my buddies owns a small contract business. He has an older Quad. I believe it i
Electronics Forum | Mon Nov 02 15:29:16 EST 2009 | dilogic
Pneumatic feeders are fixed-pitch, which is quite OK for most 8mm tape parts (except 0402 and smaller). Multipitch feeders are electric and cost a lot more, so you should see what pitches do you need and is it worth buying MP feeder(s). We have 30% i
Electronics Forum | Wed Nov 04 05:58:45 EST 2009 | jeffreyj
Thanks for suggesting the GSM-1, Deni. There is a dealer not too far from us that has one in stock so I'm going to go check it out today or tomorrow. Got a few quick questions for you: 1. can you load cut tape onto the feeders, or only reels? 2. how
Electronics Forum | Thu Dec 10 12:53:12 EST 2009 | deanm
Bryan, Dyoungquist is correct. You should not need to mix solder paste. Overmixing solder paste can adversely affect it. Follow these guidelines and you should be fine: 1. Keep unopened containers of paste in the refrigerator. 2. Take one container
