Electronics Forum | Tue Oct 14 19:11:44 EDT 2014 | caurbach
We have a 6622CC machine for SnPb boards. A few things you may want to try: - Solderability testing on the components/PCB. - If the fuse holders or copper in the board are sucking up all the heat, try increasing preheat. Some fluxes (like the WS f
Electronics Forum | Thu Jan 13 22:05:46 EST 2022 | mihai_voivod
-Thank you Thomas. In the past I have tried using a clip to hold it in place and it partially worked as a significant amount of connectors ended up shifted causing defects and necessitating rework. -I am going
Electronics Forum | Fri Nov 08 14:58:59 EST 2002 | davef
On the board support issue: DEK and Ovation Products make board support things to get at the issue you describe. Ovation hosted an On-Board Forum on SMTnet a while ago.
Electronics Forum | Tue Apr 17 10:22:16 EDT 2001 | tom g
Has anyone out there had solder joint wetting issues with Murata ceramic chip caps, in particular with Alpha UP78 no-clean paste? We are finding that changing either the paste or the vendor corrects this problem. If so, please advise your solution(
Electronics Forum | Wed Nov 13 23:50:23 EST 2002 | iman
we changed our top/bottom clamping system in the Printer, to a side-edge clamping system. This removed the higher paste issue similar to your thread.
Electronics Forum | Mon Oct 27 16:28:18 EDT 2014 | hegemon
Thanks to the OP for the last post, closing the issue. So many times these threads can kind of tire out, and no one ever knows what the solution to the original problem was. Of course, that's the point of these forums. 'hege
Electronics Forum | Tue Oct 28 13:47:49 EDT 2014 | cbeneat
Hedge, Exactly why I posted the last. I read the Forum daily on all machines/issues, not just the ones we use, no telling what you'll pick up along the way:)
Electronics Forum | Sat Nov 23 11:34:52 EST 2002 | mark
There is some superb tooling offered by a company called Transiton Automation, http://www.board-lok.com. There are some different choices, full molded tooing ... a service,... and re-usable fine grid pin array tooling.
Electronics Forum | Thu Dec 01 16:14:45 EST 2005 | chunks
You need to verify if you're getting up to the needed temps. It looks like you're not. I'd say it started to reflow but never reached a long enough time. Nitrogen may help with further wetting.
Electronics Forum | Thu Dec 01 17:55:26 EST 2005 | russ
Your paste is oxidizing in reflow and not coelescing (spelling?) We failed kester W.S. for reasons such as this. There NoClean is a little better but we do not use that either. I would switch pastes and I will bet that your problem majically disapp
