In November 2023 Voyager 1 stopped communicating with Earth, the telemetry it was sending contained no information, but engineers working on the spacecraft could tell it was still listening. It would take months of experimenting to understand the problem and develop a fix using techniques that had never been employed before and designing software for a 50 year old computer using pen and paper.
Based on presentations by Bruce Waggoner and David Cummings - check out the originals:
https://youtu.be/7YgebbAqVmY
https://youtu.be/YcUycQoz0zg
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