On Fri, May 29, 2009 at 6:58 AM, Jay Ford <[email protected]> wrote:
> > Based on the responses I've received it seems that this is a fairly common > failure due to a design flaw. I got the usual "that's strange; nobody else > is having this problem" from Cisco. I now have ample justification for > telling them "bull". > This is a total design flaw. I've never seen it on Cisco gear, but came across the exact same failure while replacing an IBM x3550 mainboard last night. (MT: 79784AU) The failure mode looks exactly like cimg1690.jpg posted by Christian: dry/brittle/crystalline looking joint on the horseshoe jumper. There's barely any solder there. I can't imagine it's a good idea to design a joint which serves as a structural element when the applied force is normal to the board, along the axis of the joint. Can anyone else name a situation where this is done (and it doesn't fall apart...)? I can't think of one. Anyone know who does the ODM work for Cisco for these boards? The IBM board I mentioned earlier is ca. 2007, made by ASUS. I can't believe that firms started using this brilliant idea independently of each other. -Nick _______________________________________________ cisco-nsp mailing list [email protected] https://puck.nether.net/mailman/listinfo/cisco-nsp archive at http://puck.nether.net/pipermail/cisco-nsp/
