Electronics Forum | Sun Apr 15 13:56:29 EDT 2007 | bondheli
Hi Brand new here and I really need some help on a problem with a Philips CSM84V. We have programs loaded and they worked fine awhile ago. When we hit run now, the conveyor starts running without the board being present (says "transporting pcb" not w
Electronics Forum | Sat Apr 21 21:20:56 EDT 2007 | mika
Hi, Go for a very "slow down" turrent speed of 50 % and then see what is happening? It sounds that You could face a timing belt problem. I have seen this before. Another thing on this machine is whenever a slitghest misalignment between the the diffe
Electronics Forum | Thu Apr 26 16:47:52 EDT 2007 | Cmiller
Is anyone using standard FR-4 material for ROHS? All I have ever seen to indicate the need to go to a high tg/td board is that the material may fail after repeted rework. I have a customer that is trying to use IS-410 and it is causing electrical pro
Electronics Forum | Thu May 31 03:12:18 EDT 2007 | vinitverma
Hi John, You can write to me offline at vinit.verma@prosemtechnology.com and write the exact problem that you face after you have generated the action spec using PPS Pro 8.1. What is the problem that you're facing. The coordinate system is taken ca
Electronics Forum | Tue May 22 11:03:11 EDT 2007 | Michelle
We now have an AOI in our process after printing and have noticed that all the small aperatures are getting clogged by solder paste. Mainly on all fine pitch parts. We are using Kester ws R562 SN63/PB37 mesh -325+500 90% metal. It was manufactu
Electronics Forum | Fri May 25 13:24:38 EDT 2007 | mfgengr
I had a similar problem a long time ago. I eventually traced the problem to undercured solder resist. The flux was reacting with what was left of the uncured resist, leaving a white residue. We could not even hand scrub this off. The solution was to
Electronics Forum | Fri Jun 08 13:49:11 EDT 2007 | ck_the_flip
From my past experience, you can usually get away with OUT the chip wave if your SMD's are no smaller that 0805, and more importantly, there are no SOT23's. A nice, clean, inerted laminar wave (with a little smart or omega help) will solder your S
Electronics Forum | Wed Jun 13 12:19:25 EDT 2007 | allwave
Brian, We had similar problem in our inline wash machine time ago. We checked everythin on equipment (filters, DI water purity, sprayers angle, etc). To make the long story short, we found out that the problem was caused by a new solder paste. This s
Electronics Forum | Thu Jun 14 16:52:08 EDT 2007 | joeherz
Brian, We've see foaming issues with our wave flux occasionally when running large slugs of product through the wash. We love the wave flux and changing it was not an option. Our process parameters for the wash machine we're derived via a validati
Electronics Forum | Mon Jun 18 10:11:52 EDT 2007 | dyoungquist
Almost every board/panel we build is double sided and we use an MPM SPM screen printer with no problems. The screen printer is not the cause. We have seen heavier parts fall off the first side when going through the reflow for the second side. We
