HOME  |  NEWS  |  BLOGS  |  MESSAGES  |  FEATURES  |  VIDEOS  |  WEBINARS  |  INDUSTRIES  |  FOCUS ON FUNDAMENTALS
  |  REGISTER  |  LOGIN  |  HELP
Comments
View Comments: Newest First|Oldest First|Threaded View
<<  <  Page 3/3
ScotCan
User Rank
Platinum
Re: Common Assumption
ScotCan   5/4/2012 4:21:03 PM
NO RATINGS
Yes, that happens often. Another example... quite common...was the disgruntled consumer who complained that a brand new set of batteries for his flashlight were no good. We changed a blown bulb for him and hel calmed down.

ScotCan
User Rank
Platinum
Re: Check and Double Check ?
ScotCan   5/4/2012 4:15:54 PM
NO RATINGS
To be fair to the previous investigators, none of them were trouble shooters...they were parachuted into a situation which was sporadic in nature because of the two sets of tooling which could be installed in a random fashion. In Liaison Engineering, when something goes wrong you have to come up with a fix "toute suite"...management expects fast answers even 'though they look down their noses at the "Quick Fix" crowd (Liaison Engineers).

tekochip
User Rank
Platinum
Common Assumption
tekochip   5/4/2012 11:31:43 AM
NO RATINGS
It's a common assumption; people tend to believe that components are bad. Even when you have evidence to the contrary, it's easier to blame a component than a process or a tool. This issue is magnified when you have a marginal design, one that only works when a component is at its nominal rather than one end of the tolerance. I had an issue with a board that would not come out of Reset because the supervisory chip was holding the part in Reset. Technicians, the Production Manager, even Purchasing all believed that the supervisory chip was at fault because they could replace the chip and the circuit would come to life. A quick look at the spec. sheet showed that the pull-up resistor used for the supervisory chip was far too weak. Even after demonstrating that components once removed as failed were now operating properly, they refused to believe that the problem was not a faulty component, after all, the circuit had worked through two years of production without issue. I guess the cure would have been telling them that the pull-up resistor was a faulty component and needed to be replaced.


naperlou
User Rank
Blogger
Re: Check and Double Check ?
naperlou   5/4/2012 10:41:16 AM
NO RATINGS
John, as Gelnn said, this is a good example of not making assumptions.  Your predecessors all assumed that the test harness was fine.  That is often where there is a problem.  Again, check the whole chain starting from where the failure occured.

naperlou
User Rank
Blogger
Re: Check and Double Check ?
naperlou   5/4/2012 10:26:03 AM
NO RATINGS
John, as Gelnn said, this is a good example of not making assumptions.  Your predecessors all assumed that the test harness was fine.  That is often where there is a problem.  Again, check the whole chain starting from where the failure occured.

naperlou
User Rank
Blogger
Re: Check and Double Check ?
naperlou   5/4/2012 10:26:03 AM
NO RATINGS
John, as Gelnn said, this is a good example of not making assumptions.  Your predecessors all assumed that the test harness was fine.  That is often where there is a problem.  Again, check the whole chain starting from where the failure occured.

GlennA
User Rank
Gold
Check and Double Check ?
GlennA   5/4/2012 8:51:11 AM
NO RATINGS
It is interesting that none of your predecessors seemed to have taken the time to check to see if the rejected batteries were actually rejects.  There is an old saw about 'assuming'.  The problem is not 'assuming'.  The problem is not recognizing what assumptions you are making, and then not reviewing those assumptions to see if they are valid.

<<  <  Page 3/3


Partner Zone
Latest Analysis
Tesla Motors Inc. took another big step into the battery market last night, officially unveiling a strategy that would enable it to sell batteries into home and grid storage applications.
At some point in the distant future, we may all be driving electric cars. Until then, however, the debate over their ongoing viability rages on.
Machine vision and video streaming systems are used for a variety of purposes, and each has applications for which it is best suited. This denotes that there are differences between them, and these differences can be categorized as the type of lenses used, the resolution of imaging elements, and the underlying software used to interpret the data.
Comic books long have appealed to kids as a fun way to introduce reading and art without being overly didactic. Now a software engineer and project manager from Oklahoma thinks the medium can be used to get them interested in STEM careers.
Sherlock Ohms highlights stories told by engineers who have used their deductive reasoning and technical prowess to troubleshoot and solve the most perplexing engineering mysteries.
More:Blogs|News
Design News Webinar Series
3/31/2015 11:00 a.m. California / 2:00 p.m. New York
2/25/2015 11:00 a.m. California / 2:00 p.m. New York
12/11/2014 8:00 a.m. California / 11:00 a.m. New York
5/7/2015 11:00 a.m. California / 2:00 p.m. New York
Quick Poll
The Continuing Education Center offers engineers an entirely new way to get the education they need to formulate next-generation solutions.
May 4 - 8, Designing Low Power Systems using Battery and Energy Harvesting Energy Sources
SEMESTERS: 1  |  2  |  3  |  4  |  5  |  6 |  7


Focus on Fundamentals consists of 45-minute on-line classes that cover a host of technologies. You learn without leaving the comfort of your desk. All classes are taught by subject-matter experts and all are archived. So if you can't attend live, attend at your convenience.
Last Archived Class
Sponsored by Proto Labs
Learn More   |   Login   |   Archived Classes
Twitter Feed
Design News Twitter Feed
Like Us on Facebook

Sponsored Content

Technology Marketplace

Copyright © 2015 UBM Canon, A UBM company, All rights reserved. Privacy Policy | Terms of Service