Old age isn't a mechanism, but is a cause for caps to go bad old age =
drying, drying = dieing
Frank

"Lostgallifreyan" wrote in message
. ..
DaveC wrote in
:

What was the existing cap?

DaveC wrote in
:
It's a Mallory FP119A.

Any clear indications as to why or how it failed?

No. Guesses: Old age? Heat?



Old age isn't a mechanism. Heat could well be right. Also accelerated
loss
of electrolyte. Did the cap look like it had burst from inside earlier
than
any final appearance of internal gubbins? Another possibility is the
voltage
it saw. When you say 110 volts, you mean the mains, right? If so it will
be
rectified and that cap will be seeing the peak value, not the RMS, so
around
125V when under no load, so you really do need it to have a higher voltage
rating than that.