i used to use a liquid chemical for hifi snobs called 'tweak' http://www.whatsbestforum.com/showthread.php?1652-Contact-Cleaning-The-Right-Stuff
but old dollar bills worked well too due to rag content ( does not apply to new plastic money ) i read once that connectors really only had single point contact so (hehe) maybe solder your bus connectors? btw use 90% alco not the cheap 70% test for pcb cleaner: pour it on your hand.. dries invisible or white? = ok, else dont use it hth tomp On 03/24/2016 05:39 AM, ceen...@in-front.com wrote: > There isn't a need to exchange parts once they are in place. Board > manufacturers get by with flash gold plated connectors because they are lower > cost and the flash plating is only good for so many swipes before the > connector cannot meet its original spec of contact resistance, current > capacity, etc. The spec for PCI connector plating Finish 4 is a mere 2 > mating cycles. If subject to any vibration like my pneumatic ATC exhibits on > the machine it wiggles the contact surfaces just a little and chafes a bit > more. My pick and place accelerates its carriage to maybe 1-2m/s with > Sanmotion drives and servos. You can feel vibration & movement on the frame > of the machine no matter how the 1600# machine is anchored down. > > My Bridgeport probably started having connector issues after 20 years of use. > Now maybe once a month I get a servo amp fault or other random issue related > to the card cage. I remove the cards and clean PCB fingers with alcohol then > insert the cards a number of times to get into fresh metal. This works again > for a while. I just need something I can count on without the machine > faulting. Then I would make more parts. > > > Dennis > > > On Wed, 23 Mar 2016 15:11 > <bari00...@gmail.com> wrote: > >> >> Do you have to exchange your SATA and PCIe devices very often? I only do >> with my test systems. The controllers for machines might get a SATA or >> PCIe device swapped once in it's lifetime of several years. > ------------------------------------------------------------------------------ > Transform Data into Opportunity. > Accelerate data analysis in your applications with > Intel Data Analytics Acceleration Library. > Click to learn more. > http://pubads.g.doubleclick.net/gampad/clk?id=278785351&iu=/4140 > _______________________________________________ > Emc-users mailing list > Emc-users@lists.sourceforge.net > https://lists.sourceforge.net/lists/listinfo/emc-users ------------------------------------------------------------------------------ Transform Data into Opportunity. Accelerate data analysis in your applications with Intel Data Analytics Acceleration Library. Click to learn more. http://pubads.g.doubleclick.net/gampad/clk?id=278785351&iu=/4140 _______________________________________________ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
