On 09/22/2017 08:45 AM, Anton Aylward wrote:
On 22/09/17 09:26 AM, Carlos E. R. wrote:
I'm guessing at bad solder or connector issue. Not chip failure.
Historically, ever since electrical circuits were put together by soldering wired together, and that's a *VERY* long time, solder joint failure has statistically exceeded component failure.
Automated "flow" soldering was a great improvement over hand soldering of PCBs, but the baseline hasn't changed much.
There are just too many ways a solder joint can fail.
When I googled for this I was overwhelmed by the number of research papers, the amount of research done on this subject. This is indicative of both its significance and of its occurrence; that rate of occurrence is why it is so significant and such an important subject for study.
https://en.wikipedia.org/wiki/Failure_of_electronic_components#Contact_failu...
Anton - with the advent of surface mount and the Chinese penchant for playing the "I can do this with less than you" game, sometimes all you have to do is glare at a pc board and the solder connection will break. Their reluctance to use expensive (HAH!) solder isn't limited to boards, either. Sometimes cable failure analysis finds no solder at all. Manufacturers rarely use statistical sampling of output; nowdays they look at the returns percentages and sales numbers. Whatta world, whatta world. -- To unsubscribe, e-mail: opensuse+unsubscribe@opensuse.org To contact the owner, e-mail: opensuse+owner@opensuse.org