Re: [foxboro] Bulging Capacitors in P92 (P0923LT)
- From: Terry Doucet <doucet427@xxxxxxxxxxx>
- To: "foxboro@xxxxxxxxxxxxx" <foxboro@xxxxxxxxxxxxx>
- Date: Tue, 31 Mar 2015 10:23:31 -0400
This is more than just a Dell P390 problem. Have a look at Wiki Capacitor
plague.
Just in my own home I have had bulging capacitors in about five devices.
Monitor, router, wireless device, TV and Dell desktop computer. Luckily,
YouTube has videos instructing on how to take devices apart (without breaking
them) and replace the capacitors.
Wiki says that the problem was in manufacturing between 1999 and 2007. Two of
my failed capacitors at home occurred in 2014. The process industries want
their controls to last about 25 years. It is going to take a while for these
bad capacitor products to be removed from active use.
The capacitor manufacturers knew about the problem in 2003. Not sure when
major product suppliers like Dell knew about the issue and started to check
capacitors so that they did not use any pre-2003 made capacitors in their
products.
And then you have the generic problem, proportional to operating temperature
where electrolytic capacitors will fail with time.
Terry
> Date: Tue, 31 Mar 2015 09:58:56 -0400
> Subject: [foxboro] Bulging Capacitors in P92 (P0923LT)
> From: michael.toecker@xxxxxxxxx
> To: foxboro@xxxxxxxxxxxxx
>
> All Powerful List,
> I have an interesting case for you.... We have several P92 workstations,
> foxboro part P0923LT, that have been experiencing failures. After analysis,
> an outside party identified that the failure was due to failed (bulging)
> electrolytic capacitors on the Dell P390, and replaced them. We're in a
> difficult place in our lifecycle replacement, and are coming up with a
> bridging strategy between our current setup and a future setup, this is a
> big problem in that strategy.
>
> Has anyone else on the list experienced this failure? If so, was there
> more detail on what failed, why it failed, and how to prevent similar
> failures?
>
> My concern is that replacing the capacitors may be a stopgap, and that
> there may be other factors involved in the failures. For instance, if the
> power supply isn't providing power to the motherboard at spec, it may
> affect capacitor reliability. Humidity and temperature may also
> contribute, as may storage of these systems when not in use. Also, these
> capacitor failures may have other unintended effects elsewhere in the
> system.
>
> So, basically I'm asking for your experience and some ideas on what might
> be going on. Thanks!
>
> --
>
> Michael Toecker
>
>
>
>
> _________________________________________________________________________
> This mailing list is neither sponsored nor endorsed by Schneider Electric
> (formerly The Foxboro Company). Use the info you obtain here at your own
> risks. See the disclaimer at www.thecassandraproject.org/disclaimer.html
>
> foxboro mailing list: //www.freelists.org/list/foxboro
> to subscribe: mailto:foxboro-request@xxxxxxxxxxxxx?subject=join
> to unsubscribe: mailto:foxboro-request@xxxxxxxxxxxxx?subject=leave
>
>
_________________________________________________________________________
This mailing list is neither sponsored nor endorsed by Schneider Electric
(formerly The Foxboro Company). Use the info you obtain here at your own
risks. See the disclaimer at www.thecassandraproject.org/disclaimer.html
foxboro mailing list: //www.freelists.org/list/foxboro
to subscribe: mailto:foxboro-request@xxxxxxxxxxxxx?subject=join
to unsubscribe: mailto:foxboro-request@xxxxxxxxxxxxx?subject=leave
Other related posts: