Re:Heartbreaking: 6509 PSUs Fail After a Brief 22 Years of S...
by kloch on Monday January 31, 2022 @09:51PM
(#30158045)
Here's the field notice: https://www.cisco.com/c/en/us/support/docs/field-notices/637...
and more general discussion: https://www.cisco.com/c/en/us/support/web/memory-component.h...
The field notice only applies to cards but the power supplies were definitely prone to permanent failure on power on, possibly from a different type of failure. I replaced more dead power supplies (that had died on power up/cycle) than line cards over the years that I used them.
I had a bit of a cursory google and probably quite predictably didn't find much beyond cisco issue reports - is there any speculation out there about the actual root cause of the hardware faults you refer to?