Percussive maintenance can help sometimes. It's not a permanent fix but you can't always do the right fix in the middle of the ocean. Things it can help with: dislodging debris in mechanical components, reseating electrical connections that are corroding, and making yourself feel better.
What? Did I turn it off and on again? I’m a very smart technology person, of course my big brain already thought of that. I develop software for a living. It couldn’t be that simple or I wouldn’t be calling you.
. . .
Turning it off and on again worked. My shame is immense and I have wasted everybody’s time.
(And that is how I learned to embrace my own idiocy and do the recommended, simple troubleshooting tasks without questioning them.)