Electronics Forum | Mon Mar 07 09:44:49 EST 2005 | anonomous
The machine sees a magazine, but with wrong number. somehow one (maybe more) wire from the magazine bus does not reach slot 3, as the other slots work, there is probably not a short, as the magazine bus work for other slots, the problem is probably i
Electronics Forum | Fri Sep 09 11:24:31 EDT 2005 | stepheniii
Talk to your paste supplier. The reps for a couple of pastes have been very helpfull on various problems. And I've seen pastes advertised as being good for reducing tombstoning. And they see lots of customers and therefore see lots of problems and
Electronics Forum | Tue Nov 15 12:21:20 EST 2005 | arclightzero
Well, I can't speak for them falling off later on, as that's not when I see them, and they are passing their wire pull tests after bonding. What I am seeing is electrical opens during testing, and these opens coincide with the Au/Al bonded points. Th
Electronics Forum | Tue Dec 06 15:04:50 EST 2005 | solderiron
Thats because Glenbrook Reps both. The Ersascope was the original and still is the best bang for the buck. How do you know if you have flux residue under the bga without seeing it. Show me an xray system that can see flux residue? Again, this is a PR
Electronics Forum | Mon Mar 13 18:06:35 EST 2006 | slthomas
So, if 45� is theoretically optimal for aperture fill, but 60� is better for defining fine pitch bricks, is 52.5� the best compromise for an all around design, or does it not work that way? I see blades with either one angle or the other but with th
Electronics Forum | Thu Apr 19 11:53:12 EDT 2007 | Cal
I am part of the intern and Coop program here at work and see a trend of students doing just the opposite of getting a degree and going off to work for cash. We are seeing students taking up dual majors...1 in eng and 1 in Business. They understand
Electronics Forum | Mon Jul 30 10:22:57 EDT 2007 | swag
Sounds like your board stop sensor is not working properly so it's not seeing the y-stop/board edge when the board enters the center or the machine. You could try taking the camera cube cover off, jog the camera over a board then move the board back
Electronics Forum | Wed Sep 19 17:44:22 EDT 2007 | russ
there are IPC standards, I do not know them all off hand. What are the boards failing for? I have found that sometimes the original design is not optimum for any number of reasons. Some fab shops catch these and correct and may or may not inform yo
Electronics Forum | Mon Dec 10 01:55:54 EST 2007 | Frank
Here are some questions you should be considering... How many of each machine type are actually installed and being used in the market? What is the local support in your area from each vendor? Where are their spare parts warehoused? What is the w
Electronics Forum | Wed Aug 26 18:58:07 EDT 2009 | rossi
I am not sure that it is the pillow problem. With the pillow problem you tend to see residual solder on the pad and voids where this solder pulled from on the ball. What we are seeing is a very thin flat layer of solder on the pad and a flat surface
