Electronics Forum | Mon Apr 02 19:54:45 EDT 2001 | Steve
George, Did you ever get to the bottom of your XY offset issue. I am a user of Protel and SMS Linecontrol, and know the system well. You probably need to find out if the Protel XY is the component center or Pin 1. The SMS Linecontrol Protel modul
Electronics Forum | Sat Dec 04 09:42:18 EST 1999 | Chris McDonald
Just as explained in a follow-up you are getting too much paste on the pad. The pad is probably the right size but you cant have your aperature the same size as your pad. What we have done is put a Cross in the stencil. This will reduce the paste and
Electronics Forum | Fri Sep 13 13:51:38 EDT 2002 | kenbliss
I recently saw an ad in a major trade magazine that stated: �about 60%of all printed circuit board manufacturing defects are due to stencil printing� I would like to hear comments from people that are running SMT lines, is this fact and if it is, w
Electronics Forum | Wed Dec 18 08:19:00 EST 2002 | cyber_wolf
One thing that will also cause this is very slight stencil mis-alignment. Sometimes the paste will have a tendency to hang up in the apertures if you are over hanging just a little on the solder mask. Some solder mask are very slick and will not pull
Electronics Forum | Fri Dec 03 11:44:52 EST 2004 | vinod
Hi Barb, First of all I think you are looking for AOI system, not AOL. As per my experience AOI checks for present, absence of the component, wrong polarity, wrong component, misaligned component, tomb stone, upside down etc. It also looks for solde
Electronics Forum | Thu Feb 17 15:14:27 EST 2005 | OverTheHill
Ah,ha,ha,ha,ha,ha.....Ah,ha,ha,ha You guys are killing me !!!!!!!!!!! Let's get serious folks. O. Tarango, Tarango, Tarango. Every once in a while the earth has been known to wobble on it's axis. You were probably trying to build a board during th
Electronics Forum | Mon Feb 21 08:23:31 EST 2005 | pemnut
Gee Paul, the first two responses to this post where people fishing for info. I would love to help out on this one, but we all have nothing to work with. Can't troubleshoot without knowing the problem. Please feel free to write a 30 page solution abo
Electronics Forum | Wed Feb 23 17:23:36 EST 2005 | Brent Robinson
Another this to check is the feeder itself and packaging. The feeders have a little shutter covering the part when the feeder advances. We have noticed a static charge build up in that, or the parts, causing the part to pull out of the pocket when
Electronics Forum | Fri Jun 17 23:31:12 EDT 2005 | kenscj
Hi all, currently, we are seeing BGA problem like solder ball misalign, void, solder short (all under BGA, tested with 5DX), after reflow. We examine the solder ball (raw material of BGA), and see that the ball surface is not smooth, will that affe
Electronics Forum | Mon Jul 24 02:47:25 EDT 2006 | emeto
Hi CKH, If the problem is on the current board type only, the problem is in the fiducials or in the CAD data. If the problem remains on all boards(different product) it is definetly a machine calibration problem. Did you try to reteach the board one
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