Blown Cap???What Else To Replace During Service???

Just have it repaired.  There is no good way to predict ahead of time what will go next.

This is my end game amplifier so I really would like to have it gone through & brought up to as new condition.Aren't there any systems or components that usually follow bad caps that can be at least checked for condition?Thanks very much all.

The big item on amps that needs to be thought about are all the power supply caps. That's what will wear after 20 years or longer (depending on when made, new amps have better caps).  Power supply caps can go and cause a cascade of failures which can end up turning an amp into a brick.

So, if your amp is reaching that age, recapping is good.  The other parts are going to be much more reliable.

     ANY electrolytic caps in the amp are subject to drying out with age.

                   Not just those in the power supply.

     Have all replaced and save yourself further headaches.