Hi Jimboot,
Electrolytic capacitors are the weak point of electronics. I recently had to change three of them every few months in a satellite receiver that was only six years old. These capacitors in the power supplies withstand high currents, but for reasons of economy, engineers don't size them enough, so they heat up, and a capacitor that heats up degrades faster. They can be replaced by any capacitor of the same capacity and voltage or higher voltage, but if possible bigger so that they don't have the same problem later on. The capacitors with "low ESR" are the best (lower serial resistance, but this information is not always available). Then, it's all a question of space in the box to put them, sometimes you have to connect them with extra wires, it's not a problem if the wire section is sufficient (diameter > 1 mm is generally enough).
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"Open your mind, but not like a trash bin"
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