Electronics Forum | Thu Aug 21 05:08:09 EDT 2008 | ihamon
Hi, We had a electric failure on a printed wired board after a few hours of functionning. We determined that the failure was caused by a open circuit in the PCB internal layer near to a via. We performed a microsection but unfortunately, it seemes t
Electronics Forum | Thu Aug 21 07:34:36 EDT 2008 | realchunks
You will need to micro section a virgin board in the same spot.
Electronics Forum | Tue Aug 25 20:33:31 EDT 1998 | Karlin
| | | | Hi, | | | | Does anyone has experiences in reflowing Ceramic BGA and found solder wicking ? Solder wicking has the syndrome that solder being wick from the pad and ended up in the leads. | | | | We have rule out the possibility of not printin
Electronics Forum | Sun Nov 26 08:21:41 EST 2006 | callckq
Dear All, Is anyone know why too much solder paste might cause tombstoning defect? Thanks
Electronics Forum | Tue Nov 28 11:12:48 EST 2006 | billwestiet
The ONLY (unlikely) cause I could think of is if you are pushing the component into the solder, ending up with more solder on one side than the other. Why do you think it is the volume of solder that is causing this? By the way, there are "low tomb
Electronics Forum | Tue Nov 28 07:55:58 EST 2006 | davef
Too much solder paste is NOT in our "Top Ten Causes of Tombstoning". Try: * Searching the fine SMTnet Archives for background * Looking here: http://www.efdsolder.com/PDF/EFD-Tombstone-Troubleshooting.pdf We have no relationship, nor receive benef
Electronics Forum | Wed Nov 29 01:05:48 EST 2006 | callckq
Dear Davef, Bill West, Thanks for your valuable inputs..Have a nice day.
Electronics Forum | Thu Aug 27 15:40:50 EDT 1998 | Justin Medernach
| | | | | Hi, | | | | | Does anyone has experiences in reflowing Ceramic BGA and found solder wicking ? Solder wicking has the syndrome that solder being wick from the pad and ended up in the leads. | | | | | We have rule out the possibility of not p
Electronics Forum | Fri Jul 30 09:59:10 EDT 2004 | Steve
Excessive Time above Liquidus will cause a solder joint to become extremely brittle. Any shock or stress to the joint can lead to a failure.
Electronics Forum | Thu Mar 02 05:30:45 EST 2006 | arnie
we are encountering a problem wherein the ballast transformer we built on the pcb produced a vibration or a humming sound.? what is the possible cause on it. what may the problem on the assembly of transformer.