Electronics Forum | Wed Jun 13 16:51:26 EDT 2012 | davef
Sorry, but I don't have a quick and easy answer. Before jumping the 'black pad shark,' tell us more about your boards ... * Is the gold still on the pads after soldering? * Can you make the pads take solder using a soldering iron? * Does this happen
Electronics Forum | Thu Aug 29 15:09:23 EDT 2013 | bvdb
Hi, Yes, there is a board marked "Memory Board" but it does not actually contain any memory. The memory card is attached to the CPU card. The board marked "Memory" is a board that allows you to plug in a Compact Flash (CF) memory card which we do
Electronics Forum | Tue Jun 06 11:47:33 EDT 2017 | stevezeva
Hi Zac, was that board finished with tin/lead HASL or leadfree/HASL? Also what type of flux were you using? Just because a board is fresh out of sealed packaging doesn't necessarily mean that it's going to solder well. The picture that I've attached
Electronics Forum | Tue May 22 02:27:50 EDT 2018 | bukas
there are numerous factors: -stencil age -stencil finish and thickness -stencil-board vertical alignment -board support -squeegee pressure -squeegee blade material and condition question here is did stencil changed its dimension over time? ar
Electronics Forum | Thu Oct 17 09:21:24 EDT 2019 | proceng1
We've been getting more and more flex and rigid-flex assemblies. Making carriers for mounting the boards to go through printer and pick & place is becoming more challenging with the size of some of the arrays. Normally we use a pair of pins tha
Electronics Forum | Wed Mar 04 13:45:01 EST 2020 | tomdegas
I appreciate the help. The Hydra travel is fine and goes down and back up with no trouble. I swapped the Z Mot board with the Y Mot board with no change. The long ribbon cables were changed about a month ago but I will inspect them again to be sure.
Electronics Forum | Fri Jan 13 18:35:53 EST 2023 | stephendo
I think that the top secret part is mounted on a flex rigid board. And it only looks like it is a display with a ribbon connected to the yellow board. I think the yellow board and white board were made with the flex connection and the display mounted
Electronics Forum | Wed Jun 27 21:05:48 EDT 2001 | davef
BGA Cycle 1: solder ball attach. BGA Cycle 2: BGA attach to board. BGA Cycle 3: BGA removal from board. BGA Cycle 4: BGA pad dress. BGA Cycle 5: BGA ball replacement. BGA Cycle 6: BGA re-attach to board. Board Cycle 1: BGA attach to board. Boar
Electronics Forum | Mon Jul 16 21:39:40 EDT 2001 | davef
The method you suggest is about the only way to �clean-up� this terrible situation. Realistically, this is a "memory" type condition induced by design, build symmetry, "cross ply construction", excessive cool down rates during lamination or reflow a
Electronics Forum | Mon Feb 13 14:34:31 EST 2006 | pjc
The best way to compare is ask each machine company to bring their machine in for a demo. Since they are bench-top machines, they are easy to transport. Pick one of your boards for them to run. Don't send any board data ahead of time. When they come
