Comment by jacquesm

Sure, but we're talking insane amounts of time unless it hits something head one. Even the electronics are still alive and in 2024 after a long break we managed to get signals back. It is anybody's guess at this point how long the craft will remain functional but it will take a long, long time (long after humanity will either have destroyed itself or has figured out how to overtake it) before it is 'a melted lump of metal'.

Look at the metal that we routinely dig up in the hostile environment known as 'Earth' and which wasn't particularly designed to be long lasting. Voyager is just that: designed to last for a really long time. At a minimum several millennia, though of course by that time the electronics will no longer function, and not because they no longer have power but simply because they have degraded due to their rather more sensitive nature than the rest of the craft.