Electronics Forum | Tue Jun 07 19:04:07 EDT 2022 | proceng1
IF the two are identical, swap the suspected bad one (#2) position 1, and see if the fuse blows before connecting the second one. Basically the same test process you describe, but swap the units first. See if the problem follows the card, or stays
Electronics Forum | Thu Oct 27 13:05:16 EDT 2022 | proceng1
there is an ajustment on the sensor itself. You may be able to adjust it so that it "sees" the board in the UP position, since it sees it as it travels in.
Electronics Forum | Wed May 17 14:01:46 EDT 2000 | Earl Moon
Steve, Great to see from you again, as so very many times before? New folks always welcome on the forum. You and Dave are management's big hope for success to attract more advertising. Can't wait to see what you have to ask Mr. Harper, if that happe
Electronics Forum | Tue Mar 09 14:04:13 EST 1999 | Clifford Peaslee
Dave, I see that messages in that thread show indications of other messages which are not currently there. The only reason I see for this happening is that the thread did not convert properly into the new forum last August. We do have backups that I
Electronics Forum | Thu Aug 01 07:36:03 EDT 2002 | pjc
Chris, OK, sounds like it may be more of an equipment problem: "The solder balls are randomly deposited along the path of the select wave,..." Does the equipment vendor have an applications engineering group to assist you? If not or are weak, try to
Electronics Forum | Fri Dec 13 12:10:36 EST 2002 | STEPHEN WALTERS
WE ARE EXPERENCING OPEN 8 MILL VIAS UNDER THE BGA'S, THEY ARE OPENING AFTER THE ASSEMBLY PROCESS, THEY ARE FROM MULTIPLE PCB VENDORS, THEY PASS AT THE PCB SUPPLIERS TESTING, AND WE HAVE FOUND THAT THEY HAVE HAD 2 MAJOR CAUSES 1. BUBBLE INTRAPMENT, 2.
Electronics Forum | Wed Jan 14 06:42:38 EST 2004 | tommy
We see spattered(spitting of flux or solder to nearby area) solder/flux on gold fingers.We view the gold fingers area under 30x before reflow and it is cleaned but after reflow we see flux droplets or solder on gold fingers. We tried to changed a new
Electronics Forum | Wed Feb 11 11:53:42 EST 2004 | Maryann
Our company strictly does selective conformal coating applications for the customer. We will quite often see one side looks great, and the other side doesn't. We often see dewetting around holes, and have found this can be a possible flux build up. A
Electronics Forum | Thu Oct 28 08:26:40 EDT 2004 | curious
What are the defects you see when the stencil is over 50 n/cm? I can't recall ever seeing a (stencil caused) defect that wasn't a dent, ding or some other physical damage, and I would have a very hard time sending back a stencil that is working fine,
Electronics Forum | Thu Nov 25 08:23:15 EST 2004 | davef
See, you never should have purchased that xray machine. Look at the mess you've got yourself into now. ;-) Enough recrimination. What you're seeing is not surprising, not that that makes it correct. If you're seeing voids something is wrong with
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