[sdiy] electrolytic cap degradation over time ?

[Peter Blackett]

Hi,
a question for those knowledgeable people on this list .
I've been looking at an Arcam cd player about ten years old .
the problems with it are that one output channel is low in volume and
lacks bass .
so I opened up the case and found after looking at the circuitry that
one of the  electrolytic caps in one output channel has lost value .
( it measures about 10% of what it should do ).
I know that its a problem with degradation over time , but are there any
pointers that I should look at for replacement caps ?
are 105degree rated caps likely to last longer than the 85 degreee rated
caps ?
I'm assuming this is why a lot of caps are needing changing in synths
and their power supplies .
regards Peter