Electronics Forum | Wed Oct 08 10:54:35 EDT 2008 | stepheniii
Check with your stencil house. At one time I used a Panasonic screen printer with the fiducial camera looking at the top of the stencil. The stencils are cut from the bottom so the fiducials had to be cut all the way through. And the stenicl house wo
Electronics Forum | Wed Dec 23 12:50:38 EST 2009 | stepheniii
Make sure you(not someone simply telling you) check that the components are actually on the board before the wave. I think we had a thread once that started with someone saying they had parts falling off in the wave and ended with the person saying
Electronics Forum | Fri Jul 29 18:00:31 EDT 2011 | daveatdt
There should be a "Tracking" button at the bottom of the screen that you can just tab over to, then press the green start button. I have not worked with the 730, but it is that way on our 740, 750, and 760 machines. Alternatively, you can move the cu
Electronics Forum | Mon Mar 12 12:50:26 EDT 2018 | proceng1
Drives me nuts. When I first started here, the SMT operators would create oven recipes where the bottom heater zones were colder than the tops. Their logic was that then when running the second side, the parts wouldn't fall off because they would
Electronics Forum | Tue Aug 13 10:09:10 EDT 2013 | dyoungquist
We have a Heller 1707EXL that we use for lead and lead-free production. It has both a mesh belt and edge rails. We run 90% of our assemblies on the mesh belt (leaving the edge rails wide open). I have noticed when profiling a board on the mesh bel
Electronics Forum | Wed Jun 01 19:31:03 EDT 2016 | marcelll
Strange problem with a Versaflo selective wave Very long for the pot to reach is set temperature ( 5 h ) At 180 C, the pump doesn’t seem to start like it should be So very long to heat the bottom of the pot Finally, the bottom element is turning on
Electronics Forum | Wed Mar 21 07:14:13 EST 2001 | bobnelms
Phil The TIME predicament you talk about is something we "consultants" deal with every day. We certainly understand the issue. Interestingly, some of us think that TRUE root cause thinking WILL NOT OCCUR until or unless it is driven from the BOTTO
Electronics Forum | Thu Dec 05 11:04:27 EST 2002 | slthomas
They're IR, bottom side only. Frankly wave solder is not my forte (there are those that would claim nothing is), but I've personally been tasked with developing a process to do reliable, high volume bottom side SMT, so I'm drawing a lot from the tec
Electronics Forum | Mon Apr 24 04:23:56 EDT 2006 | TA
Hello guys, I am Looking for a oven with the following specifications. Can any one suggest me the best suitable model. Thanks ========================================================== - heating length 2500mm - zone top/bottom 7 - forced convection
Electronics Forum | Fri May 07 09:25:55 EDT 2010 | dwonch
Yes, the vias under the BGAs are the only ones capped. I tend to agree with you that the leaching should affect the bottom more than the top and that was actually the case with the two previous shops that had this problem. We suspected with those s
