Electronics Forum | Thu Sep 13 13:34:49 EDT 2001 | Dave G
Too much Convection Airflow in the Reflow Oven blowing parts around ? Moisture Contaminated Parts out gassing ? Board out gassing? Just some thoughts, DG
Electronics Forum | Fri Sep 28 09:30:07 EDT 2001 | kmorris
Just had a similar phenomenon 2 days ago. May relate to your issue --- or not. Like you, I did a once over looking for mechanical obstruction & couldn't find any. Ran a thermal profile on the offending PCB & all checked out. Looked in end of oven
Electronics Forum | Fri Feb 22 11:49:42 EST 2002 | stimpman
Hi, Have you checked your placements pre-reflow? The most typical cause of a billboard unlike tombstoning is a pick and place issue. Billboarding will usually happen with ( profile/bad pad layout and the most common just poor center placement. I'v
Electronics Forum | Tue Oct 02 07:23:37 EDT 2001 | cath
Has anyone caried out a DPM analysis on these components. I would be interested to know the defect rates and other assoc. placement issues as we have never placed them before. Thanks, cath
Electronics Forum | Fri Sep 15 09:14:55 EDT 2017 | dleeper
From my perspective, I like marked parts because I can use AOI to verify the correct parts are being placed in production. If an operator is going to load the wrong reel, I prefer to find out on the first PCB rather than after 5000 wrong parts have b
Electronics Forum | Wed May 21 17:11:37 EDT 2003 | radney
Yes to all of the above with the exception of the part sticking. The same parts are EASILY picked using the 4790/91 feeders on a 4790/91 machine. The new feeders just flip the part out when the feeder advances. Thanks! Lee
Electronics Forum | Tue Jul 09 00:11:42 EDT 2002 | yngwie
Thanx Dave F.
Electronics Forum | Mon Jul 08 11:53:40 EDT 2002 | yngwie
Hi Guys, We prints solder paste on via hole as the holes are used as the test points. This is a clean process. In normal production, upon completion of a primary side, board will proceed to secondary process immediately. The problem happened when
Electronics Forum | Wed Jan 07 12:18:37 EST 2004 | teamcanada
Standard boot sequence doesnt support proper power for vision. We boot up without power to camera amplifiers, turn on amplifiers post power up and vision is OK but Emergency Stop with Error Codes 9152 and 9154 pop up during production. Possible flaky
Electronics Forum | Mon Jul 08 14:41:17 EDT 2002 | davef
See what happens when you take a couple of days off? Your theory sounds reasonable, but someone else could make an equally valid case that you are blasting your solder plug across the room with the force of the expansion of entapped air between th
