Eventually yes, if you want to keep it running.

Watches, power tools, motorcycles and electronic equipment all eventually need to be overhauled and/or restored, and this applies to everything built by human hands. This is not to say YOU need to have your equipment overhauled, but eventually, someone will, assuming they see the value in keeping the equipment we love alive and well.

Older hi-fi gear is generally reliable and longer lasting than newer gear. However, there is no escaping that eventually, someone HAS to spend money to have it overhauled or restored. That should preferably be done before it fails, taking out speakers, output devices, catching fire etc. If you love a piece of equipment, consider giving it some TLC before that happens!