I’ve got a fun one to share from my college programming professor. Similar situation, they had a machine that kept locking up, and this was back in the days of huge mainframes the size of rooms. So they call the repair tech from the manufacturer.

So the repair tech shows up to the office gets the run down on what’s been going on, and goes out to his car and brings in a huge piece of wood and just starts wailing on the thing as hard as he could. The whole office was freaking out thinking this guy had lost it, and he later explained that the memory was a grid of magnetic coils, and the coils would rust and the rust shavings would fall between the coils below, corrupting the memory bits. So he was shaking them loose by slamming the machine with this piece of wood. Lol wild times.