I personally do not replace Amiga or any vintage computer capacitors if not required. My practice is to every once in a while (perhaps annually) measure each capacitor level with a multimeter. If I should see signs of age, I will replace, otherwise I leave them be if they show sufficient life left.
The reason for the above is simply due to minimizing risk of damaging any components such as the motherboard, solder pads, etc due to applying heat via a soldering iron, hot air, etc.
I am not saying the above is the absolute right way to go about it, but only what I personally consider to be the right thing to do, when trying to best take care of 30 year old equipment while assessing all possible risks of damage.
